Otępienie z ciałami lewy’ego
Diagnostyka i diagnoza
Otępienie z ciałami Lewy’ego (DLB) jest drugą najczęstszą przyczyną otępienia neurodegeneracyjnego, stanowiąc około 15-20% przypadków. Diagnostyka opiera się na kryteriach Międzynarodowego Konsorcjum z 2017 roku, które wyróżniają cztery główne cechy kliniczne: fluktuacje funkcji poznawczych (30-89% pacjentów), nawracające złożone halucynacje wzrokowe (do 80%), zaburzenia zachowania w fazie snu REM (RBD, obecne u 76% potwierdzonych przypadków) oraz parkinsonizm (ponad 85%). Diagnostyka wspierana jest przez biomarkery, takie jak zmniejszony wychwyt transportera dopaminy w jądrach podstawy w badaniu DaTscan (czułość 78%, swoistość 90%), scyntygrafia mięśnia sercowego z 123I-MIBG oraz potwierdzenie RBD w polisomnografii. Różnicowanie DLB od otępienia w chorobie Parkinsona opiera się na kolejności pojawiania się objawów – w DLB otępienie występuje przed lub równocześnie z parkinsonizmem.
- Diagnostyka otępienia z ciałami Lewy’ego
- Proces diagnostyczny w otępieniu z ciałami Lewy’ego
- Ocena kliniczna
- Testy neuropsychologiczne
- Badania laboratoryjne
- Badania obrazowe
- Badania elektrofizjologiczne
- Ocena funkcji autonomicznych
- Nowe metody diagnostyczne i kierunki badań
- Nowe testy przesiewowe
- Biomarkery płynów ustrojowych
- Biopsje tkanek obwodowych
- Badania nad wczesną diagnozą
- Potencjalne profile poznawcze dla wczesnej diagnozy
- Wyzwania diagnostyczne w otępieniu z ciałami Lewy’ego
- Podobieństwo do innych chorób neurodegeneracyjnych
- Zmienność regionalna w podejściu diagnostycznym
- Ograniczona świadomość i wiedza o DLB
- Dłuższy czas do diagnozy
- Konsekwencje późnej lub błędnej diagnozy
- Znaczenie wczesnej diagnozy i zespołowego podejścia
- Podsumowanie diagnostyki otępienia z ciałami Lewy’ego
Diagnostyka otępienia z ciałami Lewy’ego
Otępienie z ciałami Lewy’ego (ang. Dementia with Lewy bodies, DLB) stanowi drugą najczęstszą przyczynę otępienia neurodegeneracyjnego po chorobie Alzheimera, odpowiadając za około 15-20% wszystkich przypadków otępienia12. Pomimo swojej powszechności, DLB pozostaje trudnym do rozpoznania schorzeniem, zwłaszcza we wczesnych stadiach, ze względu na nakładanie się objawów z innymi chorobami neurodegeneracyjnymi, takimi jak choroba Alzheimera czy choroba Parkinsona34.
Wczesne i trafne rozpoznanie otępienia z ciałami Lewy’ego jest niezwykle istotne z kilku powodów. Po pierwsze, pacjenci z DLB wykazują wysoką wrażliwość na leki przeciwpsychotyczne, które mogą wywołać poważne reakcje niepożądane, a nawet zagrażać życiu56. Po drugie, wczesna diagnostyka umożliwia wdrożenie odpowiedniego leczenia objawowego i planowania opieki, co może znacząco poprawić jakość życia pacjenta i jego opiekunów7.
Kryteria diagnostyczne
W 2017 roku Międzynarodowe Konsorcjum ds. DLB opublikowało zaktualizowane kryteria diagnostyczne, które rozróżniają wyraźnie między cechami klinicznymi a biomarkerami diagnostycznymi89. Zgodnie z tymi kryteriami, podstawowym warunkiem rozpoznania DLB jest postępujące pogorszenie funkcji poznawczych o nasileniu wystarczającym do zakłócenia normalnego funkcjonowania społecznego, zawodowego lub codziennego10.
Dla rozpoznania prawdopodobnego DLB konieczne jest spełnienie jednego z poniższych warunków1112:
- Obecność co najmniej dwóch głównych cech klinicznych DLB, z lub bez obecności biomarkerów wskazujących
- Obecność tylko jednej głównej cechy klinicznej wraz z jednym lub więcej biomarkerami wskazującymi
Dla rozpoznania możliwego DLB konieczne jest spełnienie jednego z poniższych warunków13:
- Obecność tylko jednej głównej cechy klinicznej bez biomarkerów wskazujących
- Obecność jednego lub więcej biomarkerów wskazujących bez głównych cech klinicznych
Główne cechy kliniczne
Cztery główne cechy kliniczne otępienia z ciałami Lewy’ego obejmują1415:
- Fluktuacje funkcji poznawczych – charakteryzują się zmiennością uwagi i czujności, często przypominającą majaczenie. Mogą występować spontaniczne zmiany w funkcjach poznawczych, uwadze i poziomie pobudzenia16. Częstość występowania fluktuacji w DLB waha się od 30% do 89% w różnych badaniach17.
- Nawracające złożone halucynacje wzrokowe – występują u nawet 80% pacjentów z DLB i często są pierwszym sygnałem diagnostycznym18. Halucynacje są zwykle szczegółowe i wyraźne, często obejmują ludzi lub zwierzęta19. Obecność halucynacji wzrokowych przy łagodnym otępieniu sugeruje DLB a nie chorobę Alzheimera20.
- Zaburzenia zachowania w fazie snu REM (RBD) – polegają na odgrywaniu marzeń sennych podczas snu. RBD często poprzedza rozwinięcie pełnego obrazu klinicznego DLB i może występować nawet lata przed pojawieniem się innych objawów21. Obecność RBD silnie wspiera diagnozę DLB, gdyż występuje u 76% pacjentów z DLB potwierdzonym w badaniu pośmiertnym, w porównaniu do 4% u pacjentów bez DLB22.
- Parkinsonizm – obejmuje spowolnienie ruchowe (bradykinezja), sztywność mięśniową i drżenie spoczynkowe. Parkinsonizm występuje ostatecznie u ponad 85% pacjentów z DLB, choć na wczesnym etapie może być subtelny lub klinicznie niezauważalny2324.
Kluczowym elementem rozróżnienia DLB od otępienia w chorobie Parkinsona jest czas pojawienia się objawów otępienia w stosunku do objawów parkinsonowskich. W DLB otępienie pojawia się przed lub równocześnie z objawami parkinsonizmu, natomiast w otępieniu związanym z chorobą Parkinsona zaburzenia poznawcze rozwijają się po ustalonym rozpoznaniu choroby Parkinsona2526.
Biomarkery wskazujące
Trzy biomarkery wskazujące dla otępienia z ciałami Lewy’ego obejmują2728:
- Zmniejszony wychwyt transportera dopaminy w jądrach podstawy uwidoczniony w badaniu SPECT lub PET (tzw. DaTscan). Test ten wykazuje czułość 78% i swoistość 90% w rozróżnianiu DLB od choroby Alzheimera29. DaTscan może być szczególnie pomocny, gdy parkinsonizm jest łagodny lub nieobecny w badaniu klinicznym30.
- Zmniejszony wychwyt w scyntygrafii mięśnia sercowego z użyciem 123I-MIBG (metajodobenzyloguanidyny), który świadczy o uszkodzeniu pozazwojowego unerwienia współczulnego serca, charakterystycznym dla chorób z ciałami Lewy’ego31. Ten test nie jest jednak powszechnie dostępny w niektórych krajach, w tym w Stanach Zjednoczonych32.
- Potwierdzenie REM snu bez atonii w polisomnografii, które jest wysoce specyficznym wskaźnikiem patologii związanej z ciałami Lewy’ego33. Badanie polisomnograficzne jest zalecane, gdy obecność RBD jest niepewna na podstawie wywiadu34.
Proces diagnostyczny w otępieniu z ciałami Lewy’ego
Diagnoza otępienia z ciałami Lewy’ego jest procesem złożonym i wieloetapowym, wymagającym dokładnej oceny klinicznej oraz wykluczenia innych stanów mogących naśladować objawy DLB35. Obecnie nie istnieje pojedynczy test diagnostyczny, który mógłby z całkowitą pewnością potwierdzić rozpoznanie DLB za życia pacjenta. Pewna diagnoza może być postawiona jedynie na podstawie badania pośmiertnego mózgu36.
Ocena kliniczna
Pierwszym krokiem w procesie diagnostycznym jest dokładny wywiad medyczny i badanie fizykalne37. Ważne jest zebranie informacji zarówno od pacjenta, jak i od jego opiekunów, szczególnie dotyczących zmian w funkcjonowaniu poznawczym, zachowaniu, śnie i funkcjach motorycznych38.
Badanie neurologiczne powinno obejmować ocenę39:
- Funkcji poznawczych, w tym języka i mowy
- Ruchów gałek ocznych (mogą być nieprawidłowe w niektórych typach atypowego parkinsonizmu)
- Chodu, równowagi, ruchów precyzyjnych, odruchów
- Obecności ruchów mimowolnych, takich jak drżenie
- Czucia korowego, np. ocena zdolności rozpoznawania pisma na skórze lub przedmiotów dotykiem
- Zmian w węchu
Ocena psychiatryczna może być pomocna w wykluczeniu zaburzeń psychicznych, które mogą przypominać otępienie40.
Testy neuropsychologiczne
Ocena funkcji poznawczych jest kluczowym elementem diagnostyki DLB. Do badań przesiewowych wykorzystuje się krótkie testy, takie jak4142:
- Montreal Cognitive Assessment (MoCA) – stał się standardem w ocenie wczesnych zaburzeń poznawczych w DLB
- Mini-Mental State Examination (MMSE) – jest również dostępny, ale często nie jest wystarczająco czuły do wykrywania początkowych, subtelnych deficytów poznawczych w DLB
Pełna ocena neuropsychologiczna powinna obejmować testy oceniające wszystkie domeny poznawcze potencjalnie dotknięte w DLB43. Typowy profil poznawczy w DLB obejmuje deficyty w zakresie uwagi, funkcji wykonawczych i zdolności wzrokowo-przestrzennych, podczas gdy pamięć epizodyczna może być względnie zachowana w początkowym stadium choroby44.
Badania laboratoryjne
Badania krwi są wykonywane głównie w celu wykluczenia innych przyczyn objawów, takich jak4546:
- Niedobór witamin, szczególnie witaminy B12
- Zaburzenia hormonalne, np. niedoczynność tarczycy
- Infekcje
- Wpływ leków
Lekarz powinien również dokładnie przeanalizować przyjmowane przez pacjenta leki, ponieważ niektóre z nich, stosowane w leczeniu depresji, alergii czy nietrzymania moczu, mogą powodować zaburzenia poznawcze47.
Badania obrazowe
Badania obrazowe mózgu odgrywają ważną rolę w diagnostyce różnicowej otępienia z ciałami Lewy’ego48. Najczęściej wykonywane badania obejmują:
- Rezonans magnetyczny (MRI) lub tomografię komputerową (CT) – służą do wykluczenia innych przyczyn otępienia, takich jak udar mózgu, krwawienie śródczaszkowe, guzy mózgu czy wodogłowie49. W DLB obrazowanie strukturalne jest zwykle prawidłowe, chociaż może wykazywać mniejszy stopień zaniku przyśrodkowej części płata skroniowego i hipokampa w porównaniu z chorobą Alzheimera5051.
- DaTscan (SPECT z użyciem 123I-ioflupanu) – ocenia wychwyt transportera dopaminy w jądrach podstawy i może pomóc w różnicowaniu DLB od choroby Alzheimera52. Badanie to wykazuje zmniejszony wychwyt dopaminy w jądrach podstawy u pacjentów z DLB53.
- SPECT lub PET – mogą wykazać zmniejszony przepływ krwi lub metabolizm w płacie potylicznym w DLB, czego nie obserwuje się w chorobie Alzheimera54.
- Scyntygrafia mięśnia sercowego z użyciem 123I-MIBG – ocenia unerwienie współczulne serca, które jest zmniejszone w chorobach z ciałami Lewy’ego55.
Badania elektrofizjologiczne
Badania elektrofizjologiczne mogą stanowić uzupełnienie diagnostyki DLB:
- Elektroencefalografia (EEG) – u pacjentów z DLB zmiany w EEG mogą pojawić się wcześniej niż u pacjentów z chorobą Alzheimera, ale wartość diagnostyczna tego badania nie jest jasna56. Ilościowa analiza EEG może wykazać specyficzne nieprawidłowości w odprowadzeniach tylnych57.
- Polisomnografia – służy do potwierdzenia RBD, który jest silnym wskaźnikiem diagnostycznym DLB58. Wykazanie braku atonii mięśniowej podczas fazy REM snu potwierdza diagnozę RBD59.
Ocena funkcji autonomicznych
Zaburzenia autonomiczne są częstym objawem DLB i mogą obejmować60:
- Niestabilność ciśnienia tętniczego i tętna
- Zaburzenia termoregulacji
- Nadmierne pocenie się
Do oceny funkcji autonomicznych można wykorzystać skale takie jak Non-Motor Symptoms Scale lub Scales for Outcomes in Parkinson’s Disease (SCOPA)61.
Nowe metody diagnostyczne i kierunki badań
Trwają intensywne badania nad nowymi biomarkerami i metodami diagnostycznymi, które mogłyby umożliwić wcześniejsze i dokładniejsze rozpoznanie otępienia z ciałami Lewy’ego62.
Nowe testy przesiewowe
Jednym z obiecujących narzędzi diagnostycznych jest Lewy Body Composite Risk Score (LBCRS), opracowany przez dr. Jamesa Galvina63. Jest to trzystopniowy test, który może ocenić kliniczne objawy i symptomy DLB z dokładnością 96,8%. Test ten wykazał czułość 90% i swoistość 87% w rozróżnianiu DLB od choroby Alzheimera64.
Innym narzędziem jest moduł diagnostyczny LBD opracowany przez program Alzheimer’s Disease Research Center przy National Institute on Aging, który precyzyjniej określa objawy związane z DLB i może pomóc klinicystom i badaczom w lepszej identyfikacji choroby65.
Biomarkery płynów ustrojowych
Badania nad biomarkerami w płynie mózgowo-rdzeniowym i krwi koncentrują się na wykrywaniu α-synukleiny, białka tworzącego ciała Lewy’ego66. Test Syn-SAA (α-Synuclein Seeding Amplification Assay) może wykrywać nieprawidłowo sfałdowaną α-synukleinę w płynie mózgowo-rdzeniowym, co może pomóc w diagnostyce DLB67.
Biopsje tkanek obwodowych
Obiecującym kierunkiem badań jest wykrywanie złogów α-synukleiny w tkankach obwodowych, takich jak skóra czy jelita, za pomocą biopsji68. Biopsja skóry o wysokiej czułości i swoistości dla DLB i innych zaburzeń związanych z α-synukleiną, takich jak choroba Parkinsona, jest obecnie badana69.
Badania nad wczesną diagnozą
Znaczące wysiłki badawcze koncentrują się na identyfikacji przedklinicznej i prodromalnej fazy DLB70. Niektóre objawy, takie jak zaparcia, RBD, hiposmia (osłabione powonienie) i zawroty głowy ortostatyczne, mogą poprzedzać pojawienie się zaburzeń pamięci o kilka lat71.
Badania wykazały, że osłabione powonienie (hiposmia) jest najsilniejszym klinicznym predyktorem pozytywnego wyniku testu Syn-SAA, co sugeruje, że badanie węchu wraz z testami na α-synukleinę może być przydatne w poprawie oceny diagnostycznej osób z potencjalnym DLB72.
Potencjalne profile poznawcze dla wczesnej diagnozy
Niedawne badania skoncentrowały się na identyfikacji specyficznych profili poznawczych, które mogłyby pomóc w diagnozie DLB przed stadium otępienia73. Poprzez analizę dostępnych publikacji, badacze byli w stanie ustalić profil poznawczy, który może odróżnić DLB od choroby Alzheimera przed wystąpieniem pełnoobjawowego otępienia74.
Inne badania sugerują, że pacjenci z DLB wykazują charakterystyczne zmiany w tzw. „konektomie poznawczym” (cognitive connectome), które mogą mieć implikacje dla diagnostyki różnicowej75. Analiza multiwariantowa funkcji poznawczych, zamiast oceny każdej miary poznawczej oddzielnie, może pomóc w lepszej charakterystyce złożonego i heterogenicznego fenotypu klinicznego DLB76.
Wyzwania diagnostyczne w otępieniu z ciałami Lewy’ego
Diagnoza otępienia z ciałami Lewy’ego napotyka na szereg wyzwań, które przyczyniają się do niedodiagnozowania tej choroby i opóźnień w rozpoznaniu77.
Podobieństwo do innych chorób neurodegeneracyjnych
Objawy DLB często nakładają się z objawami innych chorób neurodegeneracyjnych78:
- Choroba Alzheimera – podobne zaburzenia poznawcze, choć w DLB większy nacisk na deficyty uwagi, funkcji wykonawczych i zdolności wzrokowo-przestrzennych niż na pamięć epizodyczną79
- Choroba Parkinsona – podobne objawy ruchowe, choć w DLB zazwyczaj mniej nasilone i pojawiające się później80
- Zaburzenia psychiczne – halucynacje i urojenia mogą przypominać schizofrenię lub inne zaburzenia psychotyczne81
DLB może być również mylone z majaczeniem, szczególnie jeśli pacjent jest po raz pierwszy badany przez personel medyczny podczas nagłego przyjęcia do szpitala82.
Zmienność regionalna w podejściu diagnostycznym
Badania wykazały znaczne różnice regionalne w progu diagnostycznym dla DLB oraz w wykorzystaniu badań obrazowych, takich jak scyntygrafia DaTscan83. Te różnice w podejściu diagnostycznym klinicystów podkreślają potrzebę bardziej znormalizowanego podejścia84.
Ograniczona świadomość i wiedza o DLB
Jednym z głównych problemów w diagnostyce DLB jest ograniczona wiedza na temat tej choroby, nawet wśród neurologów czy geriatrów. Bardzo niewielu zna dokładne kryteria diagnostyczne85. Według badania przeprowadzonego przez Lewy Body Dementia Association (LBDA), około 80% pacjentów z DLB otrzymało początkowo diagnozę innego zaburzenia poznawczego, ruchowego lub psychicznego, zanim ostatecznie rozpoznano u nich otępienie z ciałami Lewy’ego86.
Dłuższy czas do diagnozy
Ścieżka diagnostyczna w DLB jest dłuższa i bardziej złożona niż w przypadku innych typów otępienia. Badania wykazały, że pacjenci z DLB potrzebują średnio 1,2 roku od pierwszej wizyty w opiece specjalistycznej do postawienia ostatecznej diagnozy, w porównaniu do 0,6 roku w przypadku innych typów otępienia87. Pacjenci z DLB przechodzą również więcej badań obrazowych (średnio 1,7 vs 1,2) i otrzymują więcej alternatywnych wstępnych diagnoz (0,8 vs 0,4) niż pacjenci z innymi typami otępienia88.
Według badania LBDA, średni czas do diagnozy DLB wynosi ponad 18 miesięcy i wymaga konsultacji z trzema lekarzami89.
Konsekwencje późnej lub błędnej diagnozy
Opóźniona lub błędna diagnoza DLB może mieć poważne konsekwencje dla pacjenta90:
- Narażenie na nieodpowiednie leki, szczególnie neuroleptyki, które mogą wywołać poważne reakcje niepożądane u pacjentów z DLB91
- Brak odpowiedniego leczenia objawowego, które mogłoby poprawić jakość życia92
- Opóźnienie w planowaniu opieki i organizacji wsparcia dla pacjenta i jego rodziny93
- Utrata możliwości uczestniczenia w badaniach klinicznych94
Znaczenie wczesnej diagnozy i zespołowego podejścia
Wczesna i dokładna diagnoza otępienia z ciałami Lewy’ego ma kluczowe znaczenie dla odpowiedniego zarządzania chorobą i poprawy jakości życia pacjenta oraz jego opiekunów95.
Korzyści z wczesnej diagnozy
Wczesna diagnoza DLB przynosi liczne korzyści9697:
- Umożliwia wdrożenie odpowiedniego leczenia objawowego
- Pozwala uniknąć leków, które mogą nasilić objawy, szczególnie neuroleptyków98
- Zmniejsza liczbę hospitalizacji (zwykle z powodu upadków/złamań) i skraca czas pobytu w szpitalu99
- Umożliwia pacjentowi i rodzinie planowanie przyszłości, w tym organizację opieki, spraw prawnych i finansowych100
- Daje możliwość uczestnictwa w badaniach klinicznych101
Identyfikacja formy otępienia na wczesnym etapie może również pomóc w zapobieganiu rozwojowi choroby poprzez ukierunkowane leczenie objawowe i bardziej celową opiekę102.
Zespołowe podejście do diagnostyki i leczenia
Ze względu na złożoność diagnozy DLB, zaleca się zespołowe podejście do oceny i leczenia103. W skład zespołu diagnostycznego mogą wchodzić104105:
- Neurolodzy, szczególnie specjalizujący się w zaburzeniach ruchowych
- Geriatrzy
- Psychiatrzy geriatryczni
- Neuropsycholodzy
Pierwotnym punktem kontaktu jest często lekarz podstawowej opieki zdrowotnej, który może przeprowadzić wstępną ocenę i skierować pacjenta do odpowiedniego specjalisty106.
Kompleksowa opieka nad pacjentem z DLB wymaga również współpracy z innymi specjalistami, takimi jak107:
- Fizjoterapeuci
- Terapeuci zajęciowi
- Logopedzi
- Dietetycy
- Pracownicy socjalni
Regularne kontrole u lekarza prowadzącego są zalecane co sześć miesięcy lub gdy opiekunowie zgłaszają zmiany w stanie pacjenta108.
Podsumowanie diagnostyki otępienia z ciałami Lewy’ego
Diagnostyka otępienia z ciałami Lewy’ego stanowi znaczące wyzwanie kliniczne ze względu na heterogeniczność objawów i nakładanie się z innymi chorobami neurodegeneracyjnymi109. Aktualne kryteria diagnostyczne z 2017 roku zapewniają ramy dla rozpoznania klinicznego, rozróżniając między cechami klinicznymi a biomarkerami diagnostycznymi110.
Proces diagnostyczny powinien obejmować dokładny wywiad medyczny, badanie fizykalne, ocenę neurologiczną, testy neuropsychologiczne, badania laboratoryjne i obrazowe111. Szczególną wartość diagnostyczną mają: fluktuacje funkcji poznawczych, nawracające złożone halucynacje wzrokowe, zaburzenia zachowania w fazie snu REM i parkinsonizm112.
Biomarkery, takie jak badanie DaTscan, scyntygrafia mięśnia sercowego z użyciem 123I-MIBG i polisomnografia, mogą wspierać diagnozę kliniczną113. Trwają badania nad nowymi biomarkerami, które mogłyby umożliwić wcześniejszą i dokładniejszą diagnozę DLB114.
Wczesna i dokładna diagnoza DLB ma kluczowe znaczenie dla odpowiedniego zarządzania chorobą, unikania leków, które mogą nasilić objawy, i zapewnienia odpowiedniego wsparcia pacjentowi i jego rodzinie115. Zespołowe podejście do diagnozy i leczenia, obejmujące neurologów, geriatrów, psychiatrów i neuropsychologów, jest zalecane ze względu na złożoność choroby116.
Pomimo postępów w zrozumieniu patofizjologii i diagnostyki DLB, pozostaje potrzeba dalszych badań nad wczesnymi biomarkerami i standaryzacją podejścia diagnostycznego, aby zmniejszyć opóźnienia w rozpoznaniu i poprawić opiekę nad pacjentami z tą chorobą117.
Kolejne rozdziały
Zapraszamy do dalszego czytania naszego leksykonu.
Wybierz kolejny rozdział z menu poniżej, aby otworzyć nową podstronę kompedium wiedzy i uzyskać szczegółowe informację o leku, substancji lub chorobie.
Materiały źródłowe
- #1 Dementia with Lewy bodies | Radiology Reference Article | Radiopaedia.orghttps://radiopaedia.org/articles/dementia-with-lewy-bodies?lang=us
Dementia with Lewy bodies (DLB), also known as Lewy body disease, is a neurodegenerative disease (a synucleinopathy to be specific) related to Parkinson disease. […] Dementia with Lewy bodies presents in older patients (onset typically in 50-70 years of age), and is sporadic. […] It is the second most common neurodegenerative cause of dementia in older patients, after Alzheimer disease, accounting for 15-20% of cases. […] MRI is the modality of choice to structurally image the brain, however, there are no easily identifiable features to specifically support the diagnosis of dementia with Lewy bodies. […] In contrast, functional imaging with SPECT/PET is in many ways more useful. […] Perhaps, more importantly, the mesial temporal lobe and hippocampi remain relatively normal in size, helping to distinguish Lewy body disease from Alzheimer disease.
- #2 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
The Dementia with Lewy Bodies (DLB) Consortium has refined its recommendations about the clinical and pathologic diagnosis of DLB, updating the previous report, which has been in widespread use for the last decade. […] The revised DLB consensus criteria now distinguish clearly between clinical features and diagnostic biomarkers, and give guidance about optimal methods to establish and interpret these. […] Substantial new information has been incorporated about previously reported aspects of DLB, with increased diagnostic weighting given to REM sleep behavior disorder and 123iodine-metaiodobenzylguanidine (MIBG) myocardial scintigraphy. […] The diagnostic role of other neuroimaging, electrophysiologic, and laboratory investigations is also described. […] Minor modifications to pathologic methods and criteria are recommended to take account of Alzheimer disease neuropathologic change, to add previously omitted Lewy-related pathology categories, and to include assessments for substantia nigra neuronal loss.
- #3 When It’s Not Alzheimer’s: The Differential Diagnosis of Dementia With Lewy Bodies – Neurology Advisorhttps://www.neurologyadvisor.com/features/when-its-not-alzheimers-the-differential-diagnosis-of-dementia-with-lewy-bodies/
According to a 2010 report based on a survey of caregivers of people with DLB, 78% of cases were initially misdiagnosed. […] Dementia with Lewy bodies (DLB) is one of the most common types of degenerative dementia, affecting an estimated 1.4 million people in the United States. It is also the most misdiagnosed form of dementia, taking on average more than 18 months and 3 physicians to reach a correct diagnosis. […] DLB diagnosis is primarily clinical, with a definitive diagnosis only achieved through postmortem autopsy. […] Its similarities with Alzheimers and Parkinsons disease, and the general lack of awareness and familiarity with DLB among the medical community, further complicate diagnosis. […] People with DLB commonly have some particular symptoms, such as visual hallucinations, marked fluctuations or variations in their memory and thinking, and slowed movements or tremor like what is seen in those with Parkinsons.
- #4 The Difficulty With Diagnosing Lewy Body Dementia in Patients – Altoidahttps://altoida.com/blog/difficulty-with-diagnosing-lewy-body-dementia/
Diagnosing Lewy body dementia is notoriously challenging. For people living with Lewy body dementia, this often means a lengthy journey to diagnosis, seeing several doctors and undergoing many tests before reaching a correct diagnosis. […] Despite being the second most common cause of dementia, Lewy body dementia is the most misdiagnosed dementia, according to the Lewy Body Dementia Association (LBDA). In a 2010 survey, the LBDA found that nearly 80% of people with Lewy body dementia received a diagnosis for a different cognitive, movement, or psychiatric disorder before ultimately learning they had Lewy body dementia. […] Similar to many other causes of dementia, there is no single test that can definitively diagnose Lewy body dementia. Instead, it is diagnosed clinically, meaning the diagnosis is dependent on medical history, answers to certain questions, a physical examination, and the presence of specific physical symptoms.
- #5 Getting a diagnosis of dementia with Lewy bodies (DLB) | Alzheimer’s Societyhttps://www.alzheimers.org.uk/about-dementia/types-dementia/dementia-with-lewy-bodies-diagnosis
Dementia with Lewy bodies (DLB) may account for up to 20% of all recorded dementia, but it is often misdiagnosed. […] It is important to know the specific type of dementia a person has, especially if its possible they may have dementia with Lewy bodies (DLB). […] This is because the drugs used to treat hallucinations and delusions in other types of dementia can cause a bad reaction in a person with DLB. […] Dementia with Lewy bodies can sometimes be hard to recognise. People with DLB are often mistakenly diagnosed as having another type of dementia, such as Alzheimers disease. […] DLB may also be mistaken for delirium particularly if the person is first seen by medical staff during an emergency admission to hospital. […] There is more than one way to assess whether a person may have dementia, and the process can vary.
- #6 Providing the Right Diagnosis for Lewy Body Dementia Patients – InventUMPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonhttps://news.med.miami.edu/providing-the-right-diagnosis-for-lewy-body-dementia-patients/
Lewy body dementia (LBD) may seem obscure, but there are 1.4 million Americans suffering from this disease, making it the second most common form of dementia. To complicate matters, LBD can share symptoms with Alzheimerâs, Parkinsonâs, schizophrenia, and other psychiatric conditions, making it challenging to diagnose. […] To remedy this, the Alzheimerâs Disease Research Center program at the National Institute on Aging created an LBD diagnostic module, which more precisely delineates the symptoms associated with it and will give clinicians and researchers better tools to identify the disease. […] The study showed the new module had the diagnostic firepower to effectively delineate patients in each of these groups, giving it great potential to reduce misdiagnoses. […] These findings are important because misdiagnosis is a common problem that can have tragic consequences. In addition to not receiving the best treatments, misdiagnosed LBD patients can have severe reactions to incorrect medications, including death.
- #7 Diagnosis and Management of Dementia with Lewy Bodies â Challenges and Current Practices | [current-page:pager]touchNEUROLOGYhttps://touchneurology.com/alzheimers-disease-dementia/journal-articles/diagnosis-and-management-of-dementia-with-lewy-bodies-challenges-and-current-practices/
An early diagnosis of DLB can also reduce hospital admissions (usually due to falls/fractures) and shorten the duration of any hospital stays by enabling the effective management of the condition and more targeted care focussed on specific hospitalisation triggers. […] The ability to more accurately diagnose patients with DLB would improve the selection of patients for clinical trials, enabling further research and development of novel treatments to improve patients outcomes. […] When a patient presents with possible dementia, DLB should always be considered in the differential diagnosis. As DLB is a complex condition, adherence to the current diagnostic criteria is essential and expert involvement in both the diagnosis and clinical management should occur as early as possible. […] Suspected cases of DLB should receive a specialised clinical assessment, including a full neurological examination. DaT-SPECT has been shown to be more specific than clinical diagnostic criteria for DLB and should be the modality of choice to differentiate DLB from Alzheimers disease.
- #8 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
The Dementia with Lewy Bodies (DLB) Consortium has refined its recommendations about the clinical and pathologic diagnosis of DLB, updating the previous report, which has been in widespread use for the last decade. […] The revised DLB consensus criteria now distinguish clearly between clinical features and diagnostic biomarkers, and give guidance about optimal methods to establish and interpret these. […] Substantial new information has been incorporated about previously reported aspects of DLB, with increased diagnostic weighting given to REM sleep behavior disorder and 123iodine-metaiodobenzylguanidine (MIBG) myocardial scintigraphy. […] The diagnostic role of other neuroimaging, electrophysiologic, and laboratory investigations is also described. […] Minor modifications to pathologic methods and criteria are recommended to take account of Alzheimer disease neuropathologic change, to add previously omitted Lewy-related pathology categories, and to include assessments for substantia nigra neuronal loss.
- #9 Diagnostic Criteria for Dementia with Lewy Bodies: Updates and Future Directionshttps://www.e-jmd.org/journal/view.php?doi=10.14802/jmd.19052
The aim of this article is to describe the 2017 revised consensus criteria for the clinical diagnosis of dementia with Lewy bodies (DLB) with future directions for the diagnostic criteria. […] The 2017 revised criteria clearly distinguish between clinical features and diagnostic biomarkers. […] Future directions include the development of the criteria for early diagnosis (prodromal DLB) and the establishment of new biomarkers that directly indicate Lewy-related pathology, including -synuclein imaging, biopsies of peripheral tissues (skin, etc.) for the demonstration of -synuclein deposition, and biochemical markers (cerebrospinal fluid/blood), as well as the pathological evaluation of the sensitivity and specificity of the 2017 revised diagnostic criteria. […] The 2017 criteria distinguish clearly between clinical features and diagnostic biomarkers, and significant new information about previously reported aspects of DLB has been incorporated into the 2017 revised criteria, with increased diagnostic weighting given to RBD and MIBG.
- #10 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
The revised DLB criteria presented here incorporate new developments since then and result from a review process that combined the reports of 4 multidisciplinary, expert working groups with a meeting that included patient and care partner participation. […] While maintaining their previous structure, the revised DLB clinical diagnostic criteria improve on earlier versions by distinguishing clearly between clinical features and diagnostic biomarkers, with guidance about optimal methods to establish and interpret these. […] The previous category of suggestive features is no longer used and those items, namely REM sleep behavior disorder (RBD), severe neuroleptic sensitivity, and low dopamine transporter (DAT) imaging, have been reassigned in the new scheme. […] Dementia, defined as a progressive cognitive decline of sufficient magnitude to interfere with normal social or occupational functions, or with usual daily activities, is an essential requirement for DLB diagnosis.
- #11 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
Imaging by computed tomography (CT) or magnetic resonance (MRI) should be done to rule out stroke, brain tumors, intracranial bleeding, hydrocephalus or other structural causes of dementia. Imaging in DLB is usually normal. […] In 2017, the international DLB Consortium published updated diagnostic criteria for DLB in the journal Neurology. […] Essential for a diagnosis of DLB is dementia, defined as a progressive cognitive decline of sufficient magnitude to interfere with normal social or occupational functions, or with usual daily activities. […] DLB should be diagnosed when dementia occurs before, or concurrently with parkinsonism. […] Probable DLB can be diagnosed if: two or more core clinical features of DLB are present, with or without the presence of indicative biomarkers, or only one core clinical feature is present, but with one or more indicative biomarkers.
- #12 Diagnosis of Dementia with Lewy Bodies (DLB)https://reference.medscape.com/calculator/556/diagnosis-of-dementia-with-lewy-bodies-dlb
Diagnose patients with dementia with Lewy Bodies based on the 2017 criteria. […] To be diagnosed with DLB, there is a requirement of the presence of dementia, defined as a progressive cognitive decline which interferes with daily functions. […] For a diagnosis of „probable DLB”, a patient must have either two „core clinical features” or one „core clinical feature” and one „indicative biomarker”. […] The four core clinical features include fluctuating cognition, visual hallucinations, REM-sleep behaviour disorder, and one cardinal feature of parkinsonism (bradykinesia, rest tremor, or rigidity). […] The three indicative biomarkers include reduced dopamine uptake on functional nuclear imaging, low uptake on iodine-MIBG myocardial scintigraphy, and confirmation of REM sleep without atonia on polysomnography.
- #13 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
Possible DLB can be diagnosed if: only one core clinical feature of DLB is present, with no indicative biomarker evidence, or one or more indicative biomarkers is present but there are no core clinical features. […] A consensus statement by a task force from the Movement Disorder Society for the diagnosis of PDD was published in 2007, providing criteria for probable and possible PDD. […] A diagnosis of probable PDD requires the core features and a typical presentation of clinical features that is defined as having deficits in at least two out of four cognitive domains.
- #14 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Although dementia screens such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment are useful to characterize global impairment in DLB, neuropsychological assessment should include tests covering the full range of cognitive domains potentially affected. […] DLB fluctuations have been described in detail previously and are typically delirium-like, occurring as spontaneous alterations in cognition, attention, and arousal. […] Recurrent, complex visual hallucinations occur in up to 80% of patients with DLB and are a frequent clinical signpost to diagnosis. […] Spontaneous parkinsonian features, not due to antidopaminergic medications or stroke, are common in DLB, eventually occurring in over 85%. […] RBD is now included as a core clinical feature because it occurs frequently in autopsy-confirmed cases compared with non-DLB (76% vs 4%).
- #15 Diagnosis of Dementia with Lewy Bodies (DLB)https://reference.medscape.com/calculator/556/diagnosis-of-dementia-with-lewy-bodies-dlb
Diagnose patients with dementia with Lewy Bodies based on the 2017 criteria. […] To be diagnosed with DLB, there is a requirement of the presence of dementia, defined as a progressive cognitive decline which interferes with daily functions. […] For a diagnosis of „probable DLB”, a patient must have either two „core clinical features” or one „core clinical feature” and one „indicative biomarker”. […] The four core clinical features include fluctuating cognition, visual hallucinations, REM-sleep behaviour disorder, and one cardinal feature of parkinsonism (bradykinesia, rest tremor, or rigidity). […] The three indicative biomarkers include reduced dopamine uptake on functional nuclear imaging, low uptake on iodine-MIBG myocardial scintigraphy, and confirmation of REM sleep without atonia on polysomnography.
- #16 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Although dementia screens such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment are useful to characterize global impairment in DLB, neuropsychological assessment should include tests covering the full range of cognitive domains potentially affected. […] DLB fluctuations have been described in detail previously and are typically delirium-like, occurring as spontaneous alterations in cognition, attention, and arousal. […] Recurrent, complex visual hallucinations occur in up to 80% of patients with DLB and are a frequent clinical signpost to diagnosis. […] Spontaneous parkinsonian features, not due to antidopaminergic medications or stroke, are common in DLB, eventually occurring in over 85%. […] RBD is now included as a core clinical feature because it occurs frequently in autopsy-confirmed cases compared with non-DLB (76% vs 4%).
- #17 Dementia With Lewy Bodies: Diagnosis and Management for Primary Care Providershttps://www.psychiatrist.com/pcc/dementia-lewy-bodies-diagnosis-management-primary/
Dementia with Lewy bodies is the second leading cause of dementia after Alzheimers disease. […] Thus, this diagnosis is frequently missed by primary care providers. […] A high clinical suspicion is helpful in accurate diagnosis, and presence of any of the core symptoms should initiate clinical suspicion of DLB. […] The diagnosis of dementia requires a gradual decline of cognitive function that impedes daily functioning and is accompanied by aphasia, apraxia, agnosia, or impaired executive function. […] Diagnostic criteria (Table 1) were initially established in 1996 and subsequently revised to improve sensitivity. […] However, despite the revised diagnostic criteria, the recognition of DLB remains poor, with a reported rate of less than 50% in one study. […] The prevalence of fluctuating cognition in DLB has varied considerably across different studies, ranging from 30% to 89%.
- #18 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Although dementia screens such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment are useful to characterize global impairment in DLB, neuropsychological assessment should include tests covering the full range of cognitive domains potentially affected. […] DLB fluctuations have been described in detail previously and are typically delirium-like, occurring as spontaneous alterations in cognition, attention, and arousal. […] Recurrent, complex visual hallucinations occur in up to 80% of patients with DLB and are a frequent clinical signpost to diagnosis. […] Spontaneous parkinsonian features, not due to antidopaminergic medications or stroke, are common in DLB, eventually occurring in over 85%. […] RBD is now included as a core clinical feature because it occurs frequently in autopsy-confirmed cases compared with non-DLB (76% vs 4%).
- #19 Dementia with Lewy bodies: MedlinePlus GeneticsLockhttps://medlineplus.gov/genetics/condition/dementia-with-lewy-bodies/
Dementia is often the second major feature to develop in dementia with Lewy bodies. Initially, this intellectual decline may be mild or seem to come and go. In this condition, dementia often leads to impaired ability to perform visual-spatial tasks such as assembling puzzles. Affected individuals may also have poor problem-solving skills (executive functioning), speech difficulties, and reduced inhibitions. Problems with memory typically do not occur until later. […] Most people with dementia with Lewy bodies experience visual hallucinations, which often involve people or animals. Fluctuations in behavior and thought processes (cognition) include sudden changes in attention, unintelligible speech, and brief episodes of altered consciousness that may appear as staring spells. […] Parkinsonism is usually the last major feature to develop in people with dementia with Lewy bodies, although it can appear earlier in some individuals. The movement problems typically include tremors, rigidity, unusually slow movement (bradykinesia), and impaired balance and coordination (postural instability). Affected individuals may require walking aids or wheelchair assistance over time.
- #20 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
The Montreal Cognitive Assessment (MoCA) has become the standard, whereas the Folstein Mini-Mental State Exam (MMSE) is also available, but is often not sensitive enough to detect initial, more-subtle cognitive deficits in LBD. […] Most people with DLB will experience parkinsonism over the course of the disorder, though it may be very subtle or not clinically apparent in the early stage. As such, it is not required for diagnosis. […] If visual or other hallucinations occur with mild dementia, it is suggestive of DLB over AD. […] REM sleep behavior disorder (dream enactment) frequently precedes the observed onset of LBD and the sleep partner should be asked about a history of acting out dreams. […] There is not one standard test used to assess autonomic function in DLB, however, the Non-Motor Symptoms Scale or the Scales for Outcomes in Parkinsons Disease (SCOPA) assessments can be used.
- #21 Dementia with Lewy bodies: MedlinePlus GeneticsLockhttps://medlineplus.gov/genetics/condition/dementia-with-lewy-bodies/
Dementia with Lewy bodies is a nervous system disorder characterized by a decline in intellectual function (dementia), a group of movement problems known as parkinsonism, visual hallucinations, sudden changes (fluctuations) in behavior and intellectual ability, and acting out dreams while asleep (REM sleep behavior disorder). This condition typically affects older adults, most often developing between ages 50 and 85. The life expectancy of individuals with dementia with Lewy bodies varies; people typically survive about 5 to 7 years after they are diagnosed. […] REM sleep behavior disorder may be the first sign of dementia with Lewy bodies. It can occur years before other symptoms appear. Individuals with REM sleep behavior disorder act out their dreams, talking and moving in their sleep when they should be still. This behavior becomes less pronounced as dementia with Lewy bodies worsens and additional features develop.
- #22 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Although dementia screens such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment are useful to characterize global impairment in DLB, neuropsychological assessment should include tests covering the full range of cognitive domains potentially affected. […] DLB fluctuations have been described in detail previously and are typically delirium-like, occurring as spontaneous alterations in cognition, attention, and arousal. […] Recurrent, complex visual hallucinations occur in up to 80% of patients with DLB and are a frequent clinical signpost to diagnosis. […] Spontaneous parkinsonian features, not due to antidopaminergic medications or stroke, are common in DLB, eventually occurring in over 85%. […] RBD is now included as a core clinical feature because it occurs frequently in autopsy-confirmed cases compared with non-DLB (76% vs 4%).
- #23 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
The Montreal Cognitive Assessment (MoCA) has become the standard, whereas the Folstein Mini-Mental State Exam (MMSE) is also available, but is often not sensitive enough to detect initial, more-subtle cognitive deficits in LBD. […] Most people with DLB will experience parkinsonism over the course of the disorder, though it may be very subtle or not clinically apparent in the early stage. As such, it is not required for diagnosis. […] If visual or other hallucinations occur with mild dementia, it is suggestive of DLB over AD. […] REM sleep behavior disorder (dream enactment) frequently precedes the observed onset of LBD and the sleep partner should be asked about a history of acting out dreams. […] There is not one standard test used to assess autonomic function in DLB, however, the Non-Motor Symptoms Scale or the Scales for Outcomes in Parkinsons Disease (SCOPA) assessments can be used.
- #24 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Although dementia screens such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment are useful to characterize global impairment in DLB, neuropsychological assessment should include tests covering the full range of cognitive domains potentially affected. […] DLB fluctuations have been described in detail previously and are typically delirium-like, occurring as spontaneous alterations in cognition, attention, and arousal. […] Recurrent, complex visual hallucinations occur in up to 80% of patients with DLB and are a frequent clinical signpost to diagnosis. […] Spontaneous parkinsonian features, not due to antidopaminergic medications or stroke, are common in DLB, eventually occurring in over 85%. […] RBD is now included as a core clinical feature because it occurs frequently in autopsy-confirmed cases compared with non-DLB (76% vs 4%).
- #25 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
Imaging by computed tomography (CT) or magnetic resonance (MRI) should be done to rule out stroke, brain tumors, intracranial bleeding, hydrocephalus or other structural causes of dementia. Imaging in DLB is usually normal. […] In 2017, the international DLB Consortium published updated diagnostic criteria for DLB in the journal Neurology. […] Essential for a diagnosis of DLB is dementia, defined as a progressive cognitive decline of sufficient magnitude to interfere with normal social or occupational functions, or with usual daily activities. […] DLB should be diagnosed when dementia occurs before, or concurrently with parkinsonism. […] Probable DLB can be diagnosed if: two or more core clinical features of DLB are present, with or without the presence of indicative biomarkers, or only one core clinical feature is present, but with one or more indicative biomarkers.
- #26 Lewy Body Dementia | LBD | MedlinePlushttps://medlineplus.gov/lewybodydementia.html
Dementia with Lewy bodies causes problems with thinking ability that seem similar to Alzheimer’s disease. Later, it also causes other symptoms, such as movement symptoms, visual hallucinations, and certain sleep disorders. It also causes more trouble with mental activities than with memory. […] There isn’t one test that can diagnose LBD. It is important to see an experienced doctor to get a diagnosis. This would usually be a specialist such as a neurologist. […] It’s also important to know which type of LBD a person has, so the doctor can treat that type’s particular symptoms. It also helps the doctor understand how the disease will affect the person over time. The doctor makes a diagnosis based on when certain symptoms start: […] If cognitive symptoms start within a year of movement problems, the diagnosis is dementia with Lewy bodies. […] If cognitive problems start more than a year after the movement problems, the diagnosis is Parkinson’s disease dementia.
- #27 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
If one or more of these is found, associated with one or more core clinical features, probable DLB should be diagnosed. […] The utility of DAT imaging in distinguishing DLB from AD is well-established, with sensitivity (78%) and specificity (90%). […] 123Iodine-MIBG myocardial scintigraphy quantifies postganglionic sympathetic cardiac innervation, which is reduced in LB disease. […] PSG demonstration of REM sleep without atonia is desirable whenever feasible, since it is a highly specific predictor of Lewy-related pathology. […] These are biomarkers consistent with DLB that help the diagnostic evaluation, but without clear diagnostic specificity. […] Patients with AD show greater atrophy of medial temporal lobe (MTL) structures than patients with DLB, particularly the hippocampus, which is strongly correlated at autopsy with tangle rather than plaque or LB-related pathology.
- #28 Diagnosis of Dementia with Lewy Bodies (DLB)https://reference.medscape.com/calculator/556/diagnosis-of-dementia-with-lewy-bodies-dlb
Diagnose patients with dementia with Lewy Bodies based on the 2017 criteria. […] To be diagnosed with DLB, there is a requirement of the presence of dementia, defined as a progressive cognitive decline which interferes with daily functions. […] For a diagnosis of „probable DLB”, a patient must have either two „core clinical features” or one „core clinical feature” and one „indicative biomarker”. […] The four core clinical features include fluctuating cognition, visual hallucinations, REM-sleep behaviour disorder, and one cardinal feature of parkinsonism (bradykinesia, rest tremor, or rigidity). […] The three indicative biomarkers include reduced dopamine uptake on functional nuclear imaging, low uptake on iodine-MIBG myocardial scintigraphy, and confirmation of REM sleep without atonia on polysomnography.
- #29 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
If one or more of these is found, associated with one or more core clinical features, probable DLB should be diagnosed. […] The utility of DAT imaging in distinguishing DLB from AD is well-established, with sensitivity (78%) and specificity (90%). […] 123Iodine-MIBG myocardial scintigraphy quantifies postganglionic sympathetic cardiac innervation, which is reduced in LB disease. […] PSG demonstration of REM sleep without atonia is desirable whenever feasible, since it is a highly specific predictor of Lewy-related pathology. […] These are biomarkers consistent with DLB that help the diagnostic evaluation, but without clear diagnostic specificity. […] Patients with AD show greater atrophy of medial temporal lobe (MTL) structures than patients with DLB, particularly the hippocampus, which is strongly correlated at autopsy with tangle rather than plaque or LB-related pathology.
- #30 Patients with dementia with Lewy bodies display a signature alteration of their cognitive connectome | Scientific Reportshttps://www.nature.com/articles/s41598-024-84946-4
Our first objective was to characterize the cognitive connectome of DLB patients through a comparison with a HC group. […] The comparison with AD patients showed the specificity of the DLB findings and uncovered the role of free-recall memory in DLB in contrast to consolidation of memory in AD. This study helps advance our current understanding of cognitive impairment and clinical phenotype in DLB, and aids in its clinical discrimination from AD, a diagnostic group that can be confused with DLB clinically.
- #31 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
If one or more of these is found, associated with one or more core clinical features, probable DLB should be diagnosed. […] The utility of DAT imaging in distinguishing DLB from AD is well-established, with sensitivity (78%) and specificity (90%). […] 123Iodine-MIBG myocardial scintigraphy quantifies postganglionic sympathetic cardiac innervation, which is reduced in LB disease. […] PSG demonstration of REM sleep without atonia is desirable whenever feasible, since it is a highly specific predictor of Lewy-related pathology. […] These are biomarkers consistent with DLB that help the diagnostic evaluation, but without clear diagnostic specificity. […] Patients with AD show greater atrophy of medial temporal lobe (MTL) structures than patients with DLB, particularly the hippocampus, which is strongly correlated at autopsy with tangle rather than plaque or LB-related pathology.
- #32 Patients with dementia with Lewy bodies display a signature alteration of their cognitive connectome | Scientific Reportshttps://www.nature.com/articles/s41598-024-84946-4
Our first objective was to characterize the cognitive connectome of DLB patients through a comparison with a HC group. […] The comparison with AD patients showed the specificity of the DLB findings and uncovered the role of free-recall memory in DLB in contrast to consolidation of memory in AD. This study helps advance our current understanding of cognitive impairment and clinical phenotype in DLB, and aids in its clinical discrimination from AD, a diagnostic group that can be confused with DLB clinically.
- #33 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
If one or more of these is found, associated with one or more core clinical features, probable DLB should be diagnosed. […] The utility of DAT imaging in distinguishing DLB from AD is well-established, with sensitivity (78%) and specificity (90%). […] 123Iodine-MIBG myocardial scintigraphy quantifies postganglionic sympathetic cardiac innervation, which is reduced in LB disease. […] PSG demonstration of REM sleep without atonia is desirable whenever feasible, since it is a highly specific predictor of Lewy-related pathology. […] These are biomarkers consistent with DLB that help the diagnostic evaluation, but without clear diagnostic specificity. […] Patients with AD show greater atrophy of medial temporal lobe (MTL) structures than patients with DLB, particularly the hippocampus, which is strongly correlated at autopsy with tangle rather than plaque or LB-related pathology.
- #34 Patients with dementia with Lewy bodies display a signature alteration of their cognitive connectome | Scientific Reportshttps://www.nature.com/articles/s41598-024-84946-4
Our first objective was to characterize the cognitive connectome of DLB patients through a comparison with a HC group. […] The comparison with AD patients showed the specificity of the DLB findings and uncovered the role of free-recall memory in DLB in contrast to consolidation of memory in AD. This study helps advance our current understanding of cognitive impairment and clinical phenotype in DLB, and aids in its clinical discrimination from AD, a diagnostic group that can be confused with DLB clinically.
- #35 Diagnosis and Prognosis – Lewy Body Dementia Associationhttps://www.lbda.org/diagnosis-and-prognosis/
Doctors diagnose LBD based on the patients history, examination, and possibly other blood tests or brain scans to exclude other causes of dementia, movement disorders, or behavioral problems. […] There are no medical tests that can diagnose LBD with absolute certainty during life, so when a doctor suspects a patient has LBD based on clinical features, they are diagnosed with probable LBD. […] A diagnosis by specialists very familiar with LBD may be accurate up to 90% of the time. […] Primary care providers are an appropriate, first-step resource if you are experiencing any cognitive, emotional, or physical changes. […] However, neurologists generally possess the specialized knowledge necessary to diagnose specific types of dementia or movement disorders, as do geriatric psychiatrists and neuropsychologists.
- #36 Diagnosis – Lewy Body Dementia Resource Centerhttps://lewybodyresourcecenter.org/what-is-lbd/diagnosis/
Many doctors and other health care professionals are not familiar with LBD, so people may see several physicians before receiving a correct diagnosis. […] A general practitioner is usually the first professional visited by persons who are encountering changes in thinking, behavior, or movement. But, neurologists more frequently have the knowledge required to diagnose LBD. Geriatric psychiatrists, neuropsychologists, and geriatricians may also be skilled in diagnosing the condition. […] Currently, there are no scans or tests that can absolutely diagnose LBD. The disease can only be diagnosed completely through a brain autopsy after death. […] However, medical professionals may conduct various tests to identify LBD from other diseases. […] The following tests can help support an LBD diagnosis: REM sleep test, DaTscan, PET scan, MRI, Amprion SYNTAP Biomarker Test (spinal fluid test), Skin biopsy that is highly sensitive and specific for LBD and other alpha-synuclein disorders such as Parkinsons.
- #37 Lewy Body Dementia: Causes, Symptoms, and Diagnosis | National Institute on Aginghttps://www.nia.nih.gov/health/lewy-body-dementia/lewy-body-dementia-causes-symptoms-and-diagnosis
Diagnosing LBD can be challenging. Early LBD symptoms are often confused with similar symptoms found in other brain diseases like Alzheimers disease. […] It may take more than one visit with a clinician to diagnose a person with LBD. […] People with dementia with Lewy bodies (DLB) have a decline in thinking ability, especially in the areas of attention, visual perception, and planning and organization (executive function). […] Dementia with Lewy bodies is often hard to diagnose because its early symptoms may resemble those of Alzheimers or a psychiatric illness. As a result, it is often misdiagnosed or missed altogether. […] Doctors perform physical and neurological examinations and various tests to distinguish LBD from other illnesses. An evaluation may include: Medical history and physical examination: A review of previous and current illnesses, medications, and current symptoms and tests of movement and memory give the doctor valuable information. […] No single brain scan or medical test can definitively diagnose LBD. Currently, LBD can be diagnosed with certainty only by a brain autopsy after death. However, the development of new diagnostic tests is an ongoing priority.
- #38 What Is Lewy Body Dementia?https://www.alzheimers.gov/alzheimers-dementias/lewy-body-dementia
Dementia with Lewy bodies is often hard to diagnose early because symptoms may at first look like Alzheimer’s or a mental illness such as schizophrenia. LBD can also occur alongside other forms of dementia. Talking to both the patient and family members or caregivers can help doctors make a diagnosis. It is important to tell the doctor about any symptoms involving thinking, movement, sleep, behavior, or mood. […] To diagnose LBD, doctors may: […] Although LBD currently cannot be prevented or cured, treatments may be able to help with some of the symptoms. A treatment plan may involve medications, physical and other types of therapy, and counseling. Changes to make the home safer, equipment to make everyday tasks easier, and social support are also important. […] A skilled care team can suggest ways to improve quality of life for both people with LBD and their caregivers. A neurologist should be part of the care team and can help patients and their families work with other types of professionals.
- #39 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
Neurological Exam | Motor Assessment | Psychiatric Assessment | Sleep Assessment | Autonomic Assessment | Blood Test and Imaging | DLB Diagnostic Criteria | PDD Diagnostic Criteria […] A thorough neurological examination should be conducted by a clinician experienced in neurodegenerative disorders at the time of the initial assessment. Areas of importance include: Cognitive function, including language and speech Eye movements (can be abnormal in some types of atypical parkinsonism) Gait, balance, fine/coarse motor movements, reflexes Presence of involuntary movements such as tremor Cortical sensory findings, such as assessing sensory abilities to recognize writing on the skin or objects by touch Alteration of smell […] Clinical follow-up should be done in six-month intervals or whenever changes are reported by the patient or family.
- #40 Dementia with Lewy Bodies Diagnosis | Stanford Health Carehttps://stanfordhealthcare.org/medical-conditions/brain-and-nerves/dementia-with-lewy-bodies/diagnosis.html
The only definitive diagnosis of Dementia with Lewy bodies (DLB) can be made at autopsy, as there are no specific markers to indicate the presence of Lewy bodies. So, the diagnosis of DLB is made based on your medical history, a physical exam, and your symptoms. […] In addition to a complete medical history and physical exam, your doctor may order some of the following: […] Blood tests: These are to rule out conditions such as vitamin B12 deficiency and hypothyroidism, or a lack of thyroid hormones. […] Positron emission tomography (PET). PET may detect biochemical changes in an organ or tissue that can identify the onset of a disease process before anatomical changes related to the disease can be seen with other imaging tests. […] Neuropsychological assessments. These tests assess mental functioning and include attention span, memory, language and math skills, and problem-solving skills. […] Psychiatric evaluation. This may be done to rule out a psychiatric condition that may resemble dementia.
- #41 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Although dementia screens such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment are useful to characterize global impairment in DLB, neuropsychological assessment should include tests covering the full range of cognitive domains potentially affected. […] DLB fluctuations have been described in detail previously and are typically delirium-like, occurring as spontaneous alterations in cognition, attention, and arousal. […] Recurrent, complex visual hallucinations occur in up to 80% of patients with DLB and are a frequent clinical signpost to diagnosis. […] Spontaneous parkinsonian features, not due to antidopaminergic medications or stroke, are common in DLB, eventually occurring in over 85%. […] RBD is now included as a core clinical feature because it occurs frequently in autopsy-confirmed cases compared with non-DLB (76% vs 4%).
- #42 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
The Montreal Cognitive Assessment (MoCA) has become the standard, whereas the Folstein Mini-Mental State Exam (MMSE) is also available, but is often not sensitive enough to detect initial, more-subtle cognitive deficits in LBD. […] Most people with DLB will experience parkinsonism over the course of the disorder, though it may be very subtle or not clinically apparent in the early stage. As such, it is not required for diagnosis. […] If visual or other hallucinations occur with mild dementia, it is suggestive of DLB over AD. […] REM sleep behavior disorder (dream enactment) frequently precedes the observed onset of LBD and the sleep partner should be asked about a history of acting out dreams. […] There is not one standard test used to assess autonomic function in DLB, however, the Non-Motor Symptoms Scale or the Scales for Outcomes in Parkinsons Disease (SCOPA) assessments can be used.
- #43 Lewy body dementia – Diagnosis and treatment – Mayo Clinichttps://www.mayoclinic.org/diseases-conditions/lewy-body-dementia/diagnosis-treatment/drc-20352030
People who are diagnosed with Lewy body dementia have a gradual decline in the ability to think. They also have at least two of the following: […] Other symptoms support a Lewy body dementia diagnosis. This includes problems with the autonomic nervous system. When this happens, the body isn’t able to regulate blood pressure, heart rate, body temperature and sweating. […] Sensitivity to medicines that treat psychosis also supports a diagnosis. This is particularly true for medicines such as haloperidol (Haldol). Antipsychotic medicines aren’t used for people with Lewy body dementia because they can make symptoms worse. […] No single test can diagnose Lewy body dementia. The diagnosis is based on your symptoms and by ruling out other conditions. Tests might include: […] A short form of this test, which assesses memory and thinking skills, can be done in less than 10 minutes. The test doesn’t usually distinguish between Lewy body dementia and Alzheimer’s disease. But the test can determine whether you have cognitive impairment. Longer tests that take several hours help identify Lewy body dementia.
- #44 Patients with dementia with Lewy bodies display a signature alteration of their cognitive connectome | Scientific Reportshttps://www.nature.com/articles/s41598-024-84946-4
Cognition plays a central role in the diagnosis and characterization of dementia with Lewy bodies (DLB). […] The essential criterion for diagnosing DLB is a progressive cognitive decline. In addition, characterization of that cognitive decline plays an important role in the differential diagnosis of DLB. […] The typical cognitive profile of DLB includes deficits in attention, executive functions, and visual abilities, while other domains such as memory can be involved at later stages of the disease. […] The traditional approach when investigating cognition in DLB is to focus on the performance of a particular cognitive measure using univariate statistical analysis and comparing DLB patients with healthy controls (HC) or other dementias that are relevant for the differential diagnosis of DLB, such as Alzheimers disease (AD) or Parkinsons disease with dementia.
- #45 Getting a diagnosis of dementia with Lewy bodies (DLB) | Alzheimer’s Societyhttps://www.alzheimers.org.uk/about-dementia/types-dementia/dementia-with-lewy-bodies-diagnosis
The doctor may do some blood tests to rule out other causes of the persons symptoms, such as a low level of vitamins in the body or hormone problems. […] The doctor should also check the persons medications. Some drugs used to treat depression, allergies or incontinence can cause confusion. […] The person will be asked to complete tests or activities designed to show if they are having problems with thinking and perception. […] If the person shows signs of DLB, they may have brain or heart scans to help confirm the diagnosis: […] If it still not possible to make a diagnosis, a more specialised scan of the brain can be carried out. This can show the difference between DLB and other types of dementia. […] If there is still doubt, another type of brain scan can confirm a diagnosis of DLB if it shows loss of a particular type of cells (dopamine nerve cells) at the base of the brain.
- #46 Dementia with Lewy Bodies Diagnosis | Stanford Health Carehttps://stanfordhealthcare.org/medical-conditions/brain-and-nerves/dementia-with-lewy-bodies/diagnosis.html
The only definitive diagnosis of Dementia with Lewy bodies (DLB) can be made at autopsy, as there are no specific markers to indicate the presence of Lewy bodies. So, the diagnosis of DLB is made based on your medical history, a physical exam, and your symptoms. […] In addition to a complete medical history and physical exam, your doctor may order some of the following: […] Blood tests: These are to rule out conditions such as vitamin B12 deficiency and hypothyroidism, or a lack of thyroid hormones. […] Positron emission tomography (PET). PET may detect biochemical changes in an organ or tissue that can identify the onset of a disease process before anatomical changes related to the disease can be seen with other imaging tests. […] Neuropsychological assessments. These tests assess mental functioning and include attention span, memory, language and math skills, and problem-solving skills. […] Psychiatric evaluation. This may be done to rule out a psychiatric condition that may resemble dementia.
- #47 Getting a diagnosis of dementia with Lewy bodies (DLB) | Alzheimer’s Societyhttps://www.alzheimers.org.uk/about-dementia/types-dementia/dementia-with-lewy-bodies-diagnosis
The doctor may do some blood tests to rule out other causes of the persons symptoms, such as a low level of vitamins in the body or hormone problems. […] The doctor should also check the persons medications. Some drugs used to treat depression, allergies or incontinence can cause confusion. […] The person will be asked to complete tests or activities designed to show if they are having problems with thinking and perception. […] If the person shows signs of DLB, they may have brain or heart scans to help confirm the diagnosis: […] If it still not possible to make a diagnosis, a more specialised scan of the brain can be carried out. This can show the difference between DLB and other types of dementia. […] If there is still doubt, another type of brain scan can confirm a diagnosis of DLB if it shows loss of a particular type of cells (dopamine nerve cells) at the base of the brain.
- #48 Lewy body dementia – Diagnosis and treatment – Mayo Clinichttps://www.mayoclinic.org/diseases-conditions/lewy-body-dementia/diagnosis-treatment/drc-20352030
Your doctor might order an MRI or CT scan to identify a stroke or bleeding and to rule out a tumor. Dementias are diagnosed based on the medical history and physical examination. But certain features on imaging studies can suggest different types of dementia, such as Alzheimer’s or Lewy body dementia. […] If the diagnosis is unclear or the symptoms aren’t typical, you may need other imaging tests. These imaging tests may support a diagnosis of Lewy body dementia: […] You may need a sleep evaluation called a polysomnogram to check for REM sleep behavior disorder. You also may need an autonomic function test to look for signs of heart rate and blood pressure instability. […] In some countries, health care professionals also might order a heart test called myocardial scintigraphy. This checks the blood flow to your heart for indications of Lewy body dementia. However, the test isn’t used in the United States. […] Research is ongoing into other indicators of Lewy body dementia. These biomarkers might eventually enable early diagnosis of Lewy body dementia before the full disease develops.
- #49 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
Imaging by computed tomography (CT) or magnetic resonance (MRI) should be done to rule out stroke, brain tumors, intracranial bleeding, hydrocephalus or other structural causes of dementia. Imaging in DLB is usually normal. […] In 2017, the international DLB Consortium published updated diagnostic criteria for DLB in the journal Neurology. […] Essential for a diagnosis of DLB is dementia, defined as a progressive cognitive decline of sufficient magnitude to interfere with normal social or occupational functions, or with usual daily activities. […] DLB should be diagnosed when dementia occurs before, or concurrently with parkinsonism. […] Probable DLB can be diagnosed if: two or more core clinical features of DLB are present, with or without the presence of indicative biomarkers, or only one core clinical feature is present, but with one or more indicative biomarkers.
- #50 Dementia with Lewy bodies | Radiology Reference Article | Radiopaedia.orghttps://radiopaedia.org/articles/dementia-with-lewy-bodies?lang=us
Dementia with Lewy bodies (DLB), also known as Lewy body disease, is a neurodegenerative disease (a synucleinopathy to be specific) related to Parkinson disease. […] Dementia with Lewy bodies presents in older patients (onset typically in 50-70 years of age), and is sporadic. […] It is the second most common neurodegenerative cause of dementia in older patients, after Alzheimer disease, accounting for 15-20% of cases. […] MRI is the modality of choice to structurally image the brain, however, there are no easily identifiable features to specifically support the diagnosis of dementia with Lewy bodies. […] In contrast, functional imaging with SPECT/PET is in many ways more useful. […] Perhaps, more importantly, the mesial temporal lobe and hippocampi remain relatively normal in size, helping to distinguish Lewy body disease from Alzheimer disease.
- #51 Lewy Body Dementia Workup: Approach Considerations, Imaging Studies, Histologic Findingshttps://emedicine.medscape.com/article/1135041-workup
Patients with DLB usually have less hippocampal atrophy than do patients with Alzheimer disease (but more than control subjects), although whether this difference is clinically useful is under investigation, as is the diagnostic utility of functional imaging. […] SPECT or positron emission tomography (PET) scanning may show decreased occipital lobe blood flow or metabolism in DLB but not in Alzheimer disease. […] A study by Lim et al using SPECT scanning with123 I-beta- carbomethoxy-3beta-(4-fluorophenyl) tropane (123 I-beta-CIT), as well as PET scanning with18 F-fluorodeoxyglucose (18 F-FDG), in 14 patients with a clinical diagnosis of DLB and 10 with Alzheimer disease found that relative preservation of the mid- or posterior cingulate gyrus (cingulate island sign) had 100% specificity for DLB.
- #52 Dementia with Lewy bodies diagnosis | Alzheimer’s Research UKhttps://www.alzheimersresearchuk.org/dementia-information/types-of-dementia/dementia-with-lewy-bodies/diagnosis/
Diagnosing dementia, and where possible which type someone has is important. It ensures someone can receive the right treatments, support and care to help them live well with their condition. […] It is important to get the right diagnosis so that the right treatments and help can be given. […] If the doctor suspects you have dementia, you may be referred to a memory clinic or another specialist clinic where more in depth tests can be done. […] Brain scans like MRI (magnetic resonance imaging) or CT (computerised tomography), can help to diagnose dementia or rule out other causes of symptoms. […] To help make a specific diagnosis of DLB, a type of scan called a SPECT scan (or âDaTscanâ) may be used. This type of scan can show changes in the brain that are more common in this type of dementia. However, when symptoms of DLB or PD are quite clear, someone may not need this test.
- #53 Dementia with Lewy bodies | Radiology Reference Article | Radiopaedia.orghttps://radiopaedia.org/articles/dementia-with-lewy-bodies?lang=us
Findings of DLB include loss of dopaminergic neurons in the substantia nigra and related reduced striatal dopaminergic activity, therefore patients with DLB have abnormal striatal uptake on dopamine transporter scans. […] Unlike Parkinson disease, dementia with Lewy bodies respond less readily to L-dopa and also may have severe sensitivity reactions to neuroleptic drugs, such as rigidity, reduced consciousness, pyrexia, falling, postural hypotension and collapse. […] Lewy body dementia also responds favourably to acetylcholinesterase inhibitors, even more so than Alzheimer disease.
- #54 Lewy Body Dementia Workup: Approach Considerations, Imaging Studies, Histologic Findingshttps://emedicine.medscape.com/article/1135041-workup
Patients with DLB usually have less hippocampal atrophy than do patients with Alzheimer disease (but more than control subjects), although whether this difference is clinically useful is under investigation, as is the diagnostic utility of functional imaging. […] SPECT or positron emission tomography (PET) scanning may show decreased occipital lobe blood flow or metabolism in DLB but not in Alzheimer disease. […] A study by Lim et al using SPECT scanning with123 I-beta- carbomethoxy-3beta-(4-fluorophenyl) tropane (123 I-beta-CIT), as well as PET scanning with18 F-fluorodeoxyglucose (18 F-FDG), in 14 patients with a clinical diagnosis of DLB and 10 with Alzheimer disease found that relative preservation of the mid- or posterior cingulate gyrus (cingulate island sign) had 100% specificity for DLB.
- #55 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
If one or more of these is found, associated with one or more core clinical features, probable DLB should be diagnosed. […] The utility of DAT imaging in distinguishing DLB from AD is well-established, with sensitivity (78%) and specificity (90%). […] 123Iodine-MIBG myocardial scintigraphy quantifies postganglionic sympathetic cardiac innervation, which is reduced in LB disease. […] PSG demonstration of REM sleep without atonia is desirable whenever feasible, since it is a highly specific predictor of Lewy-related pathology. […] These are biomarkers consistent with DLB that help the diagnostic evaluation, but without clear diagnostic specificity. […] Patients with AD show greater atrophy of medial temporal lobe (MTL) structures than patients with DLB, particularly the hippocampus, which is strongly correlated at autopsy with tangle rather than plaque or LB-related pathology.
- #56 Lewy Body Dementia Workup: Approach Considerations, Imaging Studies, Histologic Findingshttps://emedicine.medscape.com/article/1135041-workup
No sensitive or specific blood or urine tests are currently available for DLB. Laboratory studies in patients with dementia with Lewy bodies (DLB) should include those usually ordered in a dementia evaluation, including the following: […] Cerebrospinal fluid (CSF) examination is not required in routine cases. However, CSF findings in DLB include the following: […] Patients with DLB may have changes on electroencephalography earlier than do patients with Alzheimer disease, but whether this difference is diagnostically useful is not clear. […] In certain circumstances, neuropsychological testing is helpful in differentiating DLB from Alzheimer disease and in establishing a baseline for future comparison. […] Because vascular dementia can cause symptoms and signs similar to those of DLB, brain magnetic resonance imaging (MRI) is indicated to distinguish DLB from vascular dementia.
- #57 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Evidence is building to support quantitative EEG as a DLB biomarker, characterized by specific abnormalities in posterior derivations. […] The management of patients with DLB is complex, requiring a multifaceted approach. […] Key elements include a thorough initial evaluation to ensure accurate diagnosis; early identification of signs and symptoms requiring intervention; engagement, education, and support of care providers; and a multidisciplinary team approach. […] Treatment of DLB is focused on the cognitive, psychiatric, motor, and other nonmotor symptoms that represent the core or most common features of the disorder. […] A combination of pharmacologic and nonpharmacologic approaches is optimal. […] The previously published methods for pathologic assessment and diagnosis of DLB should continue to be used with only a few modifications.
- #58 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
If one or more of these is found, associated with one or more core clinical features, probable DLB should be diagnosed. […] The utility of DAT imaging in distinguishing DLB from AD is well-established, with sensitivity (78%) and specificity (90%). […] 123Iodine-MIBG myocardial scintigraphy quantifies postganglionic sympathetic cardiac innervation, which is reduced in LB disease. […] PSG demonstration of REM sleep without atonia is desirable whenever feasible, since it is a highly specific predictor of Lewy-related pathology. […] These are biomarkers consistent with DLB that help the diagnostic evaluation, but without clear diagnostic specificity. […] Patients with AD show greater atrophy of medial temporal lobe (MTL) structures than patients with DLB, particularly the hippocampus, which is strongly correlated at autopsy with tangle rather than plaque or LB-related pathology.
- #59 Dementia with Lewy Bodies (DLB) – PsychDBhttps://www.psychdb.com/geri/dementia/lewy-body
Possible DLB can be diagnosed if: a. Only 1 core clinical feature of DLB is present, with no indicative biomarker evidence, or b. 1 or more indicative biomarkers is present but there are no core clinical features. […] The presence REM sleep behaviour disorder is a highly specific predictor of Lewy-related pathology, and is suggestive of a 90% likelihood of a synucleinopathy. […] Cognitive tests like the Mini-Mental Status Exam (MMSE) and Montreal Cognitive Assessment (MoCA) are useful to characterize global impairment. […] Different types of brain perfusion scans (SPECT) can be done: 123Iodine-metaiodobenzylguanidine myocardial scintigraphy (MIBG) may show low striatal dopamine transporter uptake. […] 123I-ioflupane single-photon emission computed tomography (SPECT), also known as a dopamine transporter (DAT) scan, assesses DAT uptake in the basal ganglia in vivo, and has been shown to be more specific than clinical diagnostic criteria for DLB. […] Typical and High Potency Antipsychotics are CONTRAINDICATED in Lewy Body Dementia! […] Acetylcholinesterase inhibitors should be the first medications used to treat hallucinations and agitation in patients with DLB.
- #60 Lewy body dementia – Diagnosis and treatment – Mayo Clinichttps://www.mayoclinic.org/diseases-conditions/lewy-body-dementia/diagnosis-treatment/drc-20352030
People who are diagnosed with Lewy body dementia have a gradual decline in the ability to think. They also have at least two of the following: […] Other symptoms support a Lewy body dementia diagnosis. This includes problems with the autonomic nervous system. When this happens, the body isn’t able to regulate blood pressure, heart rate, body temperature and sweating. […] Sensitivity to medicines that treat psychosis also supports a diagnosis. This is particularly true for medicines such as haloperidol (Haldol). Antipsychotic medicines aren’t used for people with Lewy body dementia because they can make symptoms worse. […] No single test can diagnose Lewy body dementia. The diagnosis is based on your symptoms and by ruling out other conditions. Tests might include: […] A short form of this test, which assesses memory and thinking skills, can be done in less than 10 minutes. The test doesn’t usually distinguish between Lewy body dementia and Alzheimer’s disease. But the test can determine whether you have cognitive impairment. Longer tests that take several hours help identify Lewy body dementia.
- #61 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
The Montreal Cognitive Assessment (MoCA) has become the standard, whereas the Folstein Mini-Mental State Exam (MMSE) is also available, but is often not sensitive enough to detect initial, more-subtle cognitive deficits in LBD. […] Most people with DLB will experience parkinsonism over the course of the disorder, though it may be very subtle or not clinically apparent in the early stage. As such, it is not required for diagnosis. […] If visual or other hallucinations occur with mild dementia, it is suggestive of DLB over AD. […] REM sleep behavior disorder (dream enactment) frequently precedes the observed onset of LBD and the sleep partner should be asked about a history of acting out dreams. […] There is not one standard test used to assess autonomic function in DLB, however, the Non-Motor Symptoms Scale or the Scales for Outcomes in Parkinsons Disease (SCOPA) assessments can be used.
- #62 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
The Dementia with Lewy Bodies (DLB) Consortium has refined its recommendations about the clinical and pathologic diagnosis of DLB, updating the previous report, which has been in widespread use for the last decade. […] The revised DLB consensus criteria now distinguish clearly between clinical features and diagnostic biomarkers, and give guidance about optimal methods to establish and interpret these. […] Substantial new information has been incorporated about previously reported aspects of DLB, with increased diagnostic weighting given to REM sleep behavior disorder and 123iodine-metaiodobenzylguanidine (MIBG) myocardial scintigraphy. […] The diagnostic role of other neuroimaging, electrophysiologic, and laboratory investigations is also described. […] Minor modifications to pathologic methods and criteria are recommended to take account of Alzheimer disease neuropathologic change, to add previously omitted Lewy-related pathology categories, and to include assessments for substantia nigra neuronal loss.
- #63 Three-Minute Test Detects Common Form of Dementiahttps://www.fau.edu/newsdesk/articles/LewyBody-Test.php
An FAU neuroscientist has developed a new test that can assess clinical signs and symptoms of Lewy Body dementia, a common form of dementia thats difficult to diagnose, with 96.8 percent accuracy. […] Diagnosis is often significantly delayed. […] Until now, there has been no way to assess or operationalize many of the cognitive and behavioral symptoms of LBD in clinical practice. […] A leading neuroscientist at Florida Atlantic University has developed the Lewy Body Composite Risk Score (LBCRS) to quickly and effectively diagnose LBD and Parkinsons disease dementia (PDD) in about three minutes. […] The LBCRS was able to discriminate between Alzheimers disease and LBD with 96.8 percent accuracy, and provided sensitivity of 90 percent and specificity of 87 percent. […] Most patients never receive an evaluation by a neurologist skilled in the diagnosis of Lewy body dementia, and significant delays and misdiagnoses occur in most patients with this disease.
- #64 Three-Minute Test Detects Common Form of Dementiahttps://www.fau.edu/newsdesk/articles/LewyBody-Test.php
An FAU neuroscientist has developed a new test that can assess clinical signs and symptoms of Lewy Body dementia, a common form of dementia thats difficult to diagnose, with 96.8 percent accuracy. […] Diagnosis is often significantly delayed. […] Until now, there has been no way to assess or operationalize many of the cognitive and behavioral symptoms of LBD in clinical practice. […] A leading neuroscientist at Florida Atlantic University has developed the Lewy Body Composite Risk Score (LBCRS) to quickly and effectively diagnose LBD and Parkinsons disease dementia (PDD) in about three minutes. […] The LBCRS was able to discriminate between Alzheimers disease and LBD with 96.8 percent accuracy, and provided sensitivity of 90 percent and specificity of 87 percent. […] Most patients never receive an evaluation by a neurologist skilled in the diagnosis of Lewy body dementia, and significant delays and misdiagnoses occur in most patients with this disease.
- #65 Providing the Right Diagnosis for Lewy Body Dementia Patients – InventUMPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonhttps://news.med.miami.edu/providing-the-right-diagnosis-for-lewy-body-dementia-patients/
Lewy body dementia (LBD) may seem obscure, but there are 1.4 million Americans suffering from this disease, making it the second most common form of dementia. To complicate matters, LBD can share symptoms with Alzheimerâs, Parkinsonâs, schizophrenia, and other psychiatric conditions, making it challenging to diagnose. […] To remedy this, the Alzheimerâs Disease Research Center program at the National Institute on Aging created an LBD diagnostic module, which more precisely delineates the symptoms associated with it and will give clinicians and researchers better tools to identify the disease. […] The study showed the new module had the diagnostic firepower to effectively delineate patients in each of these groups, giving it great potential to reduce misdiagnoses. […] These findings are important because misdiagnosis is a common problem that can have tragic consequences. In addition to not receiving the best treatments, misdiagnosed LBD patients can have severe reactions to incorrect medications, including death.
- #66 Diagnostic Criteria for Dementia with Lewy Bodies: Updates and Future Directionshttps://www.e-jmd.org/journal/view.php?doi=10.14802/jmd.19052
The aim of this article is to describe the 2017 revised consensus criteria for the clinical diagnosis of dementia with Lewy bodies (DLB) with future directions for the diagnostic criteria. […] The 2017 revised criteria clearly distinguish between clinical features and diagnostic biomarkers. […] Future directions include the development of the criteria for early diagnosis (prodromal DLB) and the establishment of new biomarkers that directly indicate Lewy-related pathology, including -synuclein imaging, biopsies of peripheral tissues (skin, etc.) for the demonstration of -synuclein deposition, and biochemical markers (cerebrospinal fluid/blood), as well as the pathological evaluation of the sensitivity and specificity of the 2017 revised diagnostic criteria. […] The 2017 criteria distinguish clearly between clinical features and diagnostic biomarkers, and significant new information about previously reported aspects of DLB has been incorporated into the 2017 revised criteria, with increased diagnostic weighting given to RBD and MIBG.
- #67 Dementia with Lewy Bodies | Baylor Medicinehttps://www.bcm.edu/healthcare/specialties/neurology/parkinsons-disease-and-movement-disorders/dementia-with-lewy-bodies
DLB is named after deposits (cellular inclusions) called Lewy bodies, which are collections of an abnormal protein called alpha-synuclein. […] While clinical criteria have been published and revised, accurate diagnosis of DLB remains challenging. […] One study published in 2024 by Coughlin et al. showed that a substantial proportion of clinically diagnosed participants with DLB had negative alpha-Synuclein Seeding Amplification Assay (Syn-SAA) results. […] The study also found that reduced sense of smell (hyposmia) was the strongest clinical predictor of Syn-SAA positivity. […] Thus, the researchers concluded that hyposmia and Syn-SAA may have utility in improving the diagnostic assessment of people with potential DLB.
- #68 Diagnostic Criteria for Dementia with Lewy Bodies: Updates and Future Directionshttps://www.e-jmd.org/journal/view.php?doi=10.14802/jmd.19052
The aim of this article is to describe the 2017 revised consensus criteria for the clinical diagnosis of dementia with Lewy bodies (DLB) with future directions for the diagnostic criteria. […] The 2017 revised criteria clearly distinguish between clinical features and diagnostic biomarkers. […] Future directions include the development of the criteria for early diagnosis (prodromal DLB) and the establishment of new biomarkers that directly indicate Lewy-related pathology, including -synuclein imaging, biopsies of peripheral tissues (skin, etc.) for the demonstration of -synuclein deposition, and biochemical markers (cerebrospinal fluid/blood), as well as the pathological evaluation of the sensitivity and specificity of the 2017 revised diagnostic criteria. […] The 2017 criteria distinguish clearly between clinical features and diagnostic biomarkers, and significant new information about previously reported aspects of DLB has been incorporated into the 2017 revised criteria, with increased diagnostic weighting given to RBD and MIBG.
- #69 Diagnosis – Lewy Body Dementia Resource Centerhttps://lewybodyresourcecenter.org/what-is-lbd/diagnosis/
Many doctors and other health care professionals are not familiar with LBD, so people may see several physicians before receiving a correct diagnosis. […] A general practitioner is usually the first professional visited by persons who are encountering changes in thinking, behavior, or movement. But, neurologists more frequently have the knowledge required to diagnose LBD. Geriatric psychiatrists, neuropsychologists, and geriatricians may also be skilled in diagnosing the condition. […] Currently, there are no scans or tests that can absolutely diagnose LBD. The disease can only be diagnosed completely through a brain autopsy after death. […] However, medical professionals may conduct various tests to identify LBD from other diseases. […] The following tests can help support an LBD diagnosis: REM sleep test, DaTscan, PET scan, MRI, Amprion SYNTAP Biomarker Test (spinal fluid test), Skin biopsy that is highly sensitive and specific for LBD and other alpha-synuclein disorders such as Parkinsons.
- #70 The clinical characteristics of dementia with Lewy bodies and a consideration of prodromal diagnosis | Alzheimer’s Research & Therapy | Full Texthttps://alzres.biomedcentral.com/articles/10.1186/alzrt274
Dementia with Lewy bodies (DLB) is the second most common type of degenerative dementia following Alzheimers disease (AD). […] In recent years there has been a concerted effort to establish the phenotypes of AD and PD in the prodromal phase (before the respective syndromes of cognitive and motor impairment are expressed). Evidence for the prodromal presentation of DLB is also emerging. […] The presenting features of DLB can be broadly placed in three categories: cognitive impairment (particularly nonamnestic cognitive impairments), behavioural/psychiatric phenomena (for example, hallucinations, rapid eye movement sleep behaviour disorder (RBD)) and physical symptoms (for example, parkinsonism, decreased sense of smell, autonomic dysfunction). […] Some noncognitive symptoms such as constipation, RBD, hyposmia and postural dizziness can predate the onset of memory impairment by several years in DLB.
- #71 The clinical characteristics of dementia with Lewy bodies and a consideration of prodromal diagnosis | Alzheimer’s Research & Therapy | Full Texthttps://alzres.biomedcentral.com/articles/10.1186/alzrt274
Dementia with Lewy bodies (DLB) is the second most common type of degenerative dementia following Alzheimers disease (AD). […] In recent years there has been a concerted effort to establish the phenotypes of AD and PD in the prodromal phase (before the respective syndromes of cognitive and motor impairment are expressed). Evidence for the prodromal presentation of DLB is also emerging. […] The presenting features of DLB can be broadly placed in three categories: cognitive impairment (particularly nonamnestic cognitive impairments), behavioural/psychiatric phenomena (for example, hallucinations, rapid eye movement sleep behaviour disorder (RBD)) and physical symptoms (for example, parkinsonism, decreased sense of smell, autonomic dysfunction). […] Some noncognitive symptoms such as constipation, RBD, hyposmia and postural dizziness can predate the onset of memory impairment by several years in DLB.
- #72 Dementia with Lewy Bodies | Baylor Medicinehttps://www.bcm.edu/healthcare/specialties/neurology/parkinsons-disease-and-movement-disorders/dementia-with-lewy-bodies
DLB is named after deposits (cellular inclusions) called Lewy bodies, which are collections of an abnormal protein called alpha-synuclein. […] While clinical criteria have been published and revised, accurate diagnosis of DLB remains challenging. […] One study published in 2024 by Coughlin et al. showed that a substantial proportion of clinically diagnosed participants with DLB had negative alpha-Synuclein Seeding Amplification Assay (Syn-SAA) results. […] The study also found that reduced sense of smell (hyposmia) was the strongest clinical predictor of Syn-SAA positivity. […] Thus, the researchers concluded that hyposmia and Syn-SAA may have utility in improving the diagnostic assessment of people with potential DLB.
- #73 Dementia with Lewy Bodies Has Been Difficult to Diagnose Early, But Comprehensive Cognitive Testing Could Change Thathttps://news.cuanschutz.edu/news-stories/dementia-with-lewy-bodies-has-been-difficult-to-diagnose-early-but-comprehensive-cognitive-testing-could-change-that
Cognitive profiles for early diagnosis of Dementia with Lewy bodies (DLB) have been outlined in a new study, out today in Alzheimers Dementia. […] By pooling information from available publications, we were able to establish a cognitive profile that can differentiate DLB from Alzheimers before the dementia stage hits, which could better help inform the direction of care for people with these diseases. […] Researchers were able to identify consistencies in cognitive symptoms among people with DLB compared to people with Alzheimers in a meta-analysis of pre-dementia stage diagnoses. […] Identifying cognitive profiles gave us the outcome necessary to suggest guidelines that practitioners could easily be trained in to better tailor plans of care, Bayram said. […] Researchers say identifying the form of dementia early can guide future planning for both the person with dementia and their care partners, and ease disease by providing proper symptomatic treatment. […] Dr. Bayram said, overall, this study provides a promising step in advancing dementia prevention and care. […] Having validated clinical criteria to diagnose DLB before dementia hits means we can prevent it from happening instead of reacting to it after significant loss in the brain has occurred.
- #74 Dementia with Lewy Bodies Has Been Difficult to Diagnose Early, But Comprehensive Cognitive Testing Could Change Thathttps://news.cuanschutz.edu/news-stories/dementia-with-lewy-bodies-has-been-difficult-to-diagnose-early-but-comprehensive-cognitive-testing-could-change-that
Cognitive profiles for early diagnosis of Dementia with Lewy bodies (DLB) have been outlined in a new study, out today in Alzheimers Dementia. […] By pooling information from available publications, we were able to establish a cognitive profile that can differentiate DLB from Alzheimers before the dementia stage hits, which could better help inform the direction of care for people with these diseases. […] Researchers were able to identify consistencies in cognitive symptoms among people with DLB compared to people with Alzheimers in a meta-analysis of pre-dementia stage diagnoses. […] Identifying cognitive profiles gave us the outcome necessary to suggest guidelines that practitioners could easily be trained in to better tailor plans of care, Bayram said. […] Researchers say identifying the form of dementia early can guide future planning for both the person with dementia and their care partners, and ease disease by providing proper symptomatic treatment. […] Dr. Bayram said, overall, this study provides a promising step in advancing dementia prevention and care. […] Having validated clinical criteria to diagnose DLB before dementia hits means we can prevent it from happening instead of reacting to it after significant loss in the brain has occurred.
- #75 Patients with dementia with Lewy bodies display a signature alteration of their cognitive connectome | Scientific Reportshttps://www.nature.com/articles/s41598-024-84946-4
This issue highlights the necessity of using multivariate approaches to investigate cognition in DLB. […] Characterizing the cognitive connectome in DLB could have implications for advancing our understanding of the complex and heterogeneous clinical phenotype of DLB. Moreover, it could help improve the differential diagnosis of DLB by integrating data profiles instead of assessing each cognitive measure separately in an univariate manner. […] Our results showed alterations in the cognitive connectome of DLB patients driven by global and nodal alterations across features of integration, segregation, and centrality. These findings help characterize the complex associations among cognitive deficits in DLB patients, which can have clinical implications for differential diagnosis and cognitive interventions.
- #76 Patients with dementia with Lewy bodies display a signature alteration of their cognitive connectome | Scientific Reportshttps://www.nature.com/articles/s41598-024-84946-4
This issue highlights the necessity of using multivariate approaches to investigate cognition in DLB. […] Characterizing the cognitive connectome in DLB could have implications for advancing our understanding of the complex and heterogeneous clinical phenotype of DLB. Moreover, it could help improve the differential diagnosis of DLB by integrating data profiles instead of assessing each cognitive measure separately in an univariate manner. […] Our results showed alterations in the cognitive connectome of DLB patients driven by global and nodal alterations across features of integration, segregation, and centrality. These findings help characterize the complex associations among cognitive deficits in DLB patients, which can have clinical implications for differential diagnosis and cognitive interventions.
- #77 Clinical diagnosis of Lewy body dementia | BJPsych Open | Cambridge Corehttps://www.cambridge.org/core/journals/bjpsych-open/article/clinical-diagnosis-of-lewy-body-dementia/90A3E4D7C82285B6682318A60F926607
Lewy body dementia, consisting of both dementia with Lewy bodies (DLB) and Parkinson’s disease dementia (PDD), is considerably under-recognised clinically compared with its frequency in autopsy series. […] This study investigated the clinical diagnostic pathways of patients with Lewy body dementia to assess if difficulties in diagnosis may be contributing to these differences. […] The cases of individuals with DLB took longer to reach a final diagnosis (1.2 v. 0.6 years, P = 0.017), underwent more scans (1.7 v. 1.2, P = 0.002) and had more alternative prior diagnoses (0.8 v. 0.4, P = 0.002), than the cases of those with non-DLB dementia. […] Our results show the pathway to diagnosis of DLB is longer and more complex than for non-DLB dementia. […] There were also marked differences between regions in the thresholds clinicians adopt for diagnosing DLB and also in the use of dopamine transporter imaging.
- #78 The Difficulty With Diagnosing Lewy Body Dementia in Patients – Altoidahttps://altoida.com/blog/difficulty-with-diagnosing-lewy-body-dementia/
Diagnosing Lewy body dementia is notoriously challenging. For people living with Lewy body dementia, this often means a lengthy journey to diagnosis, seeing several doctors and undergoing many tests before reaching a correct diagnosis. […] Despite being the second most common cause of dementia, Lewy body dementia is the most misdiagnosed dementia, according to the Lewy Body Dementia Association (LBDA). In a 2010 survey, the LBDA found that nearly 80% of people with Lewy body dementia received a diagnosis for a different cognitive, movement, or psychiatric disorder before ultimately learning they had Lewy body dementia. […] Similar to many other causes of dementia, there is no single test that can definitively diagnose Lewy body dementia. Instead, it is diagnosed clinically, meaning the diagnosis is dependent on medical history, answers to certain questions, a physical examination, and the presence of specific physical symptoms.
- #79 Patients with dementia with Lewy bodies display a signature alteration of their cognitive connectome | Scientific Reportshttps://www.nature.com/articles/s41598-024-84946-4
Cognition plays a central role in the diagnosis and characterization of dementia with Lewy bodies (DLB). […] The essential criterion for diagnosing DLB is a progressive cognitive decline. In addition, characterization of that cognitive decline plays an important role in the differential diagnosis of DLB. […] The typical cognitive profile of DLB includes deficits in attention, executive functions, and visual abilities, while other domains such as memory can be involved at later stages of the disease. […] The traditional approach when investigating cognition in DLB is to focus on the performance of a particular cognitive measure using univariate statistical analysis and comparing DLB patients with healthy controls (HC) or other dementias that are relevant for the differential diagnosis of DLB, such as Alzheimers disease (AD) or Parkinsons disease with dementia.
- #80 Lewy Body Dementia: Diagnosis and Treatment | MyParkinsonsTeamhttps://www.myparkinsonsteam.com/resources/lewy-body-dementia-diagnosis-and-treatment
In addition, at least one of these core clinical features must be present for a diagnosis of DLB to be made: Fluctuating cognitive states, including inattention and alertness; Recurrent visual hallucinations that are very detailed and vivid; Features of parkinsonism (slow movement, resting tremors, or rigidity), with onset that occurs after cognitive decline begins. […] Other diagnostic features of DLB include rapid eye movement sleep behavior disorder and severe neuroleptic (antipsychotic medication) sensitivity. […] The presence of motor symptoms is the key to distinguish DLB from Alzheimers disease, as motor or movement symptoms are not present in Alzheimers disease.
- #81 What Is Lewy Body Dementia?https://www.alzheimers.gov/alzheimers-dementias/lewy-body-dementia
Dementia with Lewy bodies is often hard to diagnose early because symptoms may at first look like Alzheimer’s or a mental illness such as schizophrenia. LBD can also occur alongside other forms of dementia. Talking to both the patient and family members or caregivers can help doctors make a diagnosis. It is important to tell the doctor about any symptoms involving thinking, movement, sleep, behavior, or mood. […] To diagnose LBD, doctors may: […] Although LBD currently cannot be prevented or cured, treatments may be able to help with some of the symptoms. A treatment plan may involve medications, physical and other types of therapy, and counseling. Changes to make the home safer, equipment to make everyday tasks easier, and social support are also important. […] A skilled care team can suggest ways to improve quality of life for both people with LBD and their caregivers. A neurologist should be part of the care team and can help patients and their families work with other types of professionals.
- #82 Getting a diagnosis of dementia with Lewy bodies (DLB) | Alzheimer’s Societyhttps://www.alzheimers.org.uk/about-dementia/types-dementia/dementia-with-lewy-bodies-diagnosis
Dementia with Lewy bodies (DLB) may account for up to 20% of all recorded dementia, but it is often misdiagnosed. […] It is important to know the specific type of dementia a person has, especially if its possible they may have dementia with Lewy bodies (DLB). […] This is because the drugs used to treat hallucinations and delusions in other types of dementia can cause a bad reaction in a person with DLB. […] Dementia with Lewy bodies can sometimes be hard to recognise. People with DLB are often mistakenly diagnosed as having another type of dementia, such as Alzheimers disease. […] DLB may also be mistaken for delirium particularly if the person is first seen by medical staff during an emergency admission to hospital. […] There is more than one way to assess whether a person may have dementia, and the process can vary.
- #83 Clinical diagnosis of Lewy body dementia | BJPsych Open | Cambridge Corehttps://www.cambridge.org/core/journals/bjpsych-open/article/clinical-diagnosis-of-lewy-body-dementia/90A3E4D7C82285B6682318A60F926607
For PDD, a diagnosis of dementia was delayed well beyond symptom onset and even treatment. […] A comparison of the diagnostic pathways of the DLB and non-DLB dementia groups was carried out. […] The DLB group also had a significantly longer time period, on average 1.2 years compared with 0.6 years, between their first appointment in secondary care and the date of their final diagnosis. […] The pathway to diagnosis is hence longer and more challenging for patients with DLB. […] The timely diagnosis of DLB is therefore important for providing the necessary clinical care as well as support to the patient and their caregiver. […] We found regional variations in the UK in how DLB was diagnosed, in particular the thresholds clinicians required for a DLB diagnosis and also in their use of FP-CIT scans.
- #84 Clinical diagnosis of Lewy body dementia | BJPsych Open | Cambridge Corehttps://www.cambridge.org/core/journals/bjpsych-open/article/clinical-diagnosis-of-lewy-body-dementia/90A3E4D7C82285B6682318A60F926607
Such differences in the diagnostic approach of clinicians highlights the need for a more standardised approach. […] This study also shows that a diagnosis of dementia is often delayed in patients with Parkinson’s disease. […] A delay in the diagnosis of dementia has important implications for patients and their caregivers.
- #85 Diagnosis and Management of Dementia with Lewy Bodies â Challenges and Current Practices | [current-page:pager]touchNEUROLOGYhttps://touchneurology.com/alzheimers-disease-dementia/journal-articles/diagnosis-and-management-of-dementia-with-lewy-bodies-challenges-and-current-practices/
Despite the availability of defined diagnostic criteria, there remain challenges to achieving a timely and accurate diagnosis of DLB. These broadly fall into three categories: the nature of the condition (heterogeneity and a varied presentation), limited knowledge (of the condition or diagnostic criteria), and different approaches to clinical care between centres and countries. […] While advances in technology, clinical research, and efforts to increase awareness of DLB may help address the first two challenges, it is also important to identify the key differences in clinical care pathways between countries, to determine the best possible practice and thereby optimise patient outcomes. […] One of the main problems with diagnosing DLB has to do with knowledge; even amongst neurologists or geriatricians very few know the exact criteria for a diagnosis. […] DLB is an underdiagnosed condition, with post-mortem studies reporting that DLB pathology contributes to at least 15% of all dementias, while clinical studies report a substantially lower prevalence (45%), which may also vary by geographical region. There is therefore, a clear medical need for early and accurate DLB diagnoses.
- #86 The Difficulty With Diagnosing Lewy Body Dementia in Patients – Altoidahttps://altoida.com/blog/difficulty-with-diagnosing-lewy-body-dementia/
Diagnosing Lewy body dementia is notoriously challenging. For people living with Lewy body dementia, this often means a lengthy journey to diagnosis, seeing several doctors and undergoing many tests before reaching a correct diagnosis. […] Despite being the second most common cause of dementia, Lewy body dementia is the most misdiagnosed dementia, according to the Lewy Body Dementia Association (LBDA). In a 2010 survey, the LBDA found that nearly 80% of people with Lewy body dementia received a diagnosis for a different cognitive, movement, or psychiatric disorder before ultimately learning they had Lewy body dementia. […] Similar to many other causes of dementia, there is no single test that can definitively diagnose Lewy body dementia. Instead, it is diagnosed clinically, meaning the diagnosis is dependent on medical history, answers to certain questions, a physical examination, and the presence of specific physical symptoms.
- #87 Clinical diagnosis of Lewy body dementia | BJPsych Open | Cambridge Corehttps://www.cambridge.org/core/journals/bjpsych-open/article/clinical-diagnosis-of-lewy-body-dementia/90A3E4D7C82285B6682318A60F926607
For PDD, a diagnosis of dementia was delayed well beyond symptom onset and even treatment. […] A comparison of the diagnostic pathways of the DLB and non-DLB dementia groups was carried out. […] The DLB group also had a significantly longer time period, on average 1.2 years compared with 0.6 years, between their first appointment in secondary care and the date of their final diagnosis. […] The pathway to diagnosis is hence longer and more challenging for patients with DLB. […] The timely diagnosis of DLB is therefore important for providing the necessary clinical care as well as support to the patient and their caregiver. […] We found regional variations in the UK in how DLB was diagnosed, in particular the thresholds clinicians required for a DLB diagnosis and also in their use of FP-CIT scans.
- #88 Clinical diagnosis of Lewy body dementia | BJPsych Open | Cambridge Corehttps://www.cambridge.org/core/journals/bjpsych-open/article/clinical-diagnosis-of-lewy-body-dementia/90A3E4D7C82285B6682318A60F926607
Lewy body dementia, consisting of both dementia with Lewy bodies (DLB) and Parkinson’s disease dementia (PDD), is considerably under-recognised clinically compared with its frequency in autopsy series. […] This study investigated the clinical diagnostic pathways of patients with Lewy body dementia to assess if difficulties in diagnosis may be contributing to these differences. […] The cases of individuals with DLB took longer to reach a final diagnosis (1.2 v. 0.6 years, P = 0.017), underwent more scans (1.7 v. 1.2, P = 0.002) and had more alternative prior diagnoses (0.8 v. 0.4, P = 0.002), than the cases of those with non-DLB dementia. […] Our results show the pathway to diagnosis of DLB is longer and more complex than for non-DLB dementia. […] There were also marked differences between regions in the thresholds clinicians adopt for diagnosing DLB and also in the use of dopamine transporter imaging.
- #89 When It’s Not Alzheimer’s: The Differential Diagnosis of Dementia With Lewy Bodies – Neurology Advisorhttps://www.neurologyadvisor.com/features/when-its-not-alzheimers-the-differential-diagnosis-of-dementia-with-lewy-bodies/
According to a 2010 report based on a survey of caregivers of people with DLB, 78% of cases were initially misdiagnosed. […] Dementia with Lewy bodies (DLB) is one of the most common types of degenerative dementia, affecting an estimated 1.4 million people in the United States. It is also the most misdiagnosed form of dementia, taking on average more than 18 months and 3 physicians to reach a correct diagnosis. […] DLB diagnosis is primarily clinical, with a definitive diagnosis only achieved through postmortem autopsy. […] Its similarities with Alzheimers and Parkinsons disease, and the general lack of awareness and familiarity with DLB among the medical community, further complicate diagnosis. […] People with DLB commonly have some particular symptoms, such as visual hallucinations, marked fluctuations or variations in their memory and thinking, and slowed movements or tremor like what is seen in those with Parkinsons.
- #90 When It’s Not Alzheimer’s: The Differential Diagnosis of Dementia With Lewy Bodies – Neurology Advisorhttps://www.neurologyadvisor.com/features/when-its-not-alzheimers-the-differential-diagnosis-of-dementia-with-lewy-bodies/
However, not all patients with DLB will have all of the symptoms, especially during the early stages of the disease, and those with other dementias may have some of the same symptoms, making recognition and early diagnosis a challenge. […] These clinical distinctions form the basis for consensus criteria adopted by the International Consortium on DLB to clinically diagnose DLB and distinguish it from Alzheimers. […] Accurate diagnosis is especially important, as DLB is typically more debilitating than Alzheimers or Parkinsons. […] Misdiagnosis may also lead to inappropriate treatment plans, which in patients with DLB can be especially detrimental.
- #91 Providing the Right Diagnosis for Lewy Body Dementia Patients – InventUMPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonPage 1arrow–buttonhttps://news.med.miami.edu/providing-the-right-diagnosis-for-lewy-body-dementia-patients/
Lewy body dementia (LBD) may seem obscure, but there are 1.4 million Americans suffering from this disease, making it the second most common form of dementia. To complicate matters, LBD can share symptoms with Alzheimerâs, Parkinsonâs, schizophrenia, and other psychiatric conditions, making it challenging to diagnose. […] To remedy this, the Alzheimerâs Disease Research Center program at the National Institute on Aging created an LBD diagnostic module, which more precisely delineates the symptoms associated with it and will give clinicians and researchers better tools to identify the disease. […] The study showed the new module had the diagnostic firepower to effectively delineate patients in each of these groups, giving it great potential to reduce misdiagnoses. […] These findings are important because misdiagnosis is a common problem that can have tragic consequences. In addition to not receiving the best treatments, misdiagnosed LBD patients can have severe reactions to incorrect medications, including death.
- #92 Three-Minute Test Detects Common Form of Dementiahttps://www.fau.edu/newsdesk/articles/LewyBody-Test.php
This new tool has the potential to provide a clearer, more accurate picture for those patients who are unable to be seen by specialists, hastening the correct diagnosis and reducing the strain and burden placed on patients and caregivers. […] Another important aspect of the LBCRS is its ability to improve the sensitivity of diagnosis, thereby reducing the risk of exposure to patients with LBD to medications that can have potentially serious adverse consequences. […] Early detection of Lewy body dementias will be important to enable future interventions at the earliest stages when they are likely to be most effective. […] Our study provides evidence-based methodology that will have applications in clinical practice, participation in clinical trials, prevention studies, community surveys, and biomarkers research.
- #93 The Difficulty With Diagnosing Lewy Body Dementia in Patients – Altoidahttps://altoida.com/blog/difficulty-with-diagnosing-lewy-body-dementia/
Accurately diagnosing Lewy body dementia early is essential for patients to receive the right medical care and avoid receiving incorrect and/or potentially harmful treatment. Early detection also allows patients to take the time to plan their medical care, participate in clinical trials, build a support system, and arrange legal and financial affairs. […] Even with earlier, more frequent neurocognitive testing, there are still significant barriers to obtaining an accurate diagnosis. Currently, healthcare providers rely on outdated pencil and paper cognitive tests. These assessments only test a small subset of neurocognitive domains and often produce noisy, highly variable data that lacks the specificity and granularity needed to paint a true, detailed picture of neurocognitive function and, consequently, make a diagnosis without the use of expensive and/or invasive diagnostic tools.
- #94 The Difficulty With Diagnosing Lewy Body Dementia in Patients – Altoidahttps://altoida.com/blog/difficulty-with-diagnosing-lewy-body-dementia/
Accurately diagnosing Lewy body dementia early is essential for patients to receive the right medical care and avoid receiving incorrect and/or potentially harmful treatment. Early detection also allows patients to take the time to plan their medical care, participate in clinical trials, build a support system, and arrange legal and financial affairs. […] Even with earlier, more frequent neurocognitive testing, there are still significant barriers to obtaining an accurate diagnosis. Currently, healthcare providers rely on outdated pencil and paper cognitive tests. These assessments only test a small subset of neurocognitive domains and often produce noisy, highly variable data that lacks the specificity and granularity needed to paint a true, detailed picture of neurocognitive function and, consequently, make a diagnosis without the use of expensive and/or invasive diagnostic tools.
- #95 Diagnosis and Management of Dementia with Lewy Bodies â Challenges and Current Practices | [current-page:pager]touchNEUROLOGYhttps://touchneurology.com/alzheimers-disease-dementia/journal-articles/diagnosis-and-management-of-dementia-with-lewy-bodies-challenges-and-current-practices/
An early diagnosis of DLB can also reduce hospital admissions (usually due to falls/fractures) and shorten the duration of any hospital stays by enabling the effective management of the condition and more targeted care focussed on specific hospitalisation triggers. […] The ability to more accurately diagnose patients with DLB would improve the selection of patients for clinical trials, enabling further research and development of novel treatments to improve patients outcomes. […] When a patient presents with possible dementia, DLB should always be considered in the differential diagnosis. As DLB is a complex condition, adherence to the current diagnostic criteria is essential and expert involvement in both the diagnosis and clinical management should occur as early as possible. […] Suspected cases of DLB should receive a specialised clinical assessment, including a full neurological examination. DaT-SPECT has been shown to be more specific than clinical diagnostic criteria for DLB and should be the modality of choice to differentiate DLB from Alzheimers disease.
- #96 Diagnosis and Management of Dementia with Lewy Bodies â Challenges and Current Practices | [current-page:pager]touchNEUROLOGYhttps://touchneurology.com/alzheimers-disease-dementia/journal-articles/diagnosis-and-management-of-dementia-with-lewy-bodies-challenges-and-current-practices/
An early diagnosis of DLB can also reduce hospital admissions (usually due to falls/fractures) and shorten the duration of any hospital stays by enabling the effective management of the condition and more targeted care focussed on specific hospitalisation triggers. […] The ability to more accurately diagnose patients with DLB would improve the selection of patients for clinical trials, enabling further research and development of novel treatments to improve patients outcomes. […] When a patient presents with possible dementia, DLB should always be considered in the differential diagnosis. As DLB is a complex condition, adherence to the current diagnostic criteria is essential and expert involvement in both the diagnosis and clinical management should occur as early as possible. […] Suspected cases of DLB should receive a specialised clinical assessment, including a full neurological examination. DaT-SPECT has been shown to be more specific than clinical diagnostic criteria for DLB and should be the modality of choice to differentiate DLB from Alzheimers disease.
- #97 Three-Minute Test Detects Common Form of Dementiahttps://www.fau.edu/newsdesk/articles/LewyBody-Test.php
This new tool has the potential to provide a clearer, more accurate picture for those patients who are unable to be seen by specialists, hastening the correct diagnosis and reducing the strain and burden placed on patients and caregivers. […] Another important aspect of the LBCRS is its ability to improve the sensitivity of diagnosis, thereby reducing the risk of exposure to patients with LBD to medications that can have potentially serious adverse consequences. […] Early detection of Lewy body dementias will be important to enable future interventions at the earliest stages when they are likely to be most effective. […] Our study provides evidence-based methodology that will have applications in clinical practice, participation in clinical trials, prevention studies, community surveys, and biomarkers research.
- #98 Getting a diagnosis of dementia with Lewy bodies (DLB) | Alzheimer’s Societyhttps://www.alzheimers.org.uk/about-dementia/types-dementia/dementia-with-lewy-bodies-diagnosis
Dementia with Lewy bodies (DLB) may account for up to 20% of all recorded dementia, but it is often misdiagnosed. […] It is important to know the specific type of dementia a person has, especially if its possible they may have dementia with Lewy bodies (DLB). […] This is because the drugs used to treat hallucinations and delusions in other types of dementia can cause a bad reaction in a person with DLB. […] Dementia with Lewy bodies can sometimes be hard to recognise. People with DLB are often mistakenly diagnosed as having another type of dementia, such as Alzheimers disease. […] DLB may also be mistaken for delirium particularly if the person is first seen by medical staff during an emergency admission to hospital. […] There is more than one way to assess whether a person may have dementia, and the process can vary.
- #99 Diagnosis and Management of Dementia with Lewy Bodies â Challenges and Current Practices | [current-page:pager]touchNEUROLOGYhttps://touchneurology.com/alzheimers-disease-dementia/journal-articles/diagnosis-and-management-of-dementia-with-lewy-bodies-challenges-and-current-practices/
An early diagnosis of DLB can also reduce hospital admissions (usually due to falls/fractures) and shorten the duration of any hospital stays by enabling the effective management of the condition and more targeted care focussed on specific hospitalisation triggers. […] The ability to more accurately diagnose patients with DLB would improve the selection of patients for clinical trials, enabling further research and development of novel treatments to improve patients outcomes. […] When a patient presents with possible dementia, DLB should always be considered in the differential diagnosis. As DLB is a complex condition, adherence to the current diagnostic criteria is essential and expert involvement in both the diagnosis and clinical management should occur as early as possible. […] Suspected cases of DLB should receive a specialised clinical assessment, including a full neurological examination. DaT-SPECT has been shown to be more specific than clinical diagnostic criteria for DLB and should be the modality of choice to differentiate DLB from Alzheimers disease.
- #100 The Difficulty With Diagnosing Lewy Body Dementia in Patients – Altoidahttps://altoida.com/blog/difficulty-with-diagnosing-lewy-body-dementia/
Accurately diagnosing Lewy body dementia early is essential for patients to receive the right medical care and avoid receiving incorrect and/or potentially harmful treatment. Early detection also allows patients to take the time to plan their medical care, participate in clinical trials, build a support system, and arrange legal and financial affairs. […] Even with earlier, more frequent neurocognitive testing, there are still significant barriers to obtaining an accurate diagnosis. Currently, healthcare providers rely on outdated pencil and paper cognitive tests. These assessments only test a small subset of neurocognitive domains and often produce noisy, highly variable data that lacks the specificity and granularity needed to paint a true, detailed picture of neurocognitive function and, consequently, make a diagnosis without the use of expensive and/or invasive diagnostic tools.
- #101 The Difficulty With Diagnosing Lewy Body Dementia in Patients – Altoidahttps://altoida.com/blog/difficulty-with-diagnosing-lewy-body-dementia/
Accurately diagnosing Lewy body dementia early is essential for patients to receive the right medical care and avoid receiving incorrect and/or potentially harmful treatment. Early detection also allows patients to take the time to plan their medical care, participate in clinical trials, build a support system, and arrange legal and financial affairs. […] Even with earlier, more frequent neurocognitive testing, there are still significant barriers to obtaining an accurate diagnosis. Currently, healthcare providers rely on outdated pencil and paper cognitive tests. These assessments only test a small subset of neurocognitive domains and often produce noisy, highly variable data that lacks the specificity and granularity needed to paint a true, detailed picture of neurocognitive function and, consequently, make a diagnosis without the use of expensive and/or invasive diagnostic tools.
- #102 Dementia with Lewy Bodies Has Been Difficult to Diagnose Early, But Comprehensive Cognitive Testing Could Change Thathttps://news.cuanschutz.edu/news-stories/dementia-with-lewy-bodies-has-been-difficult-to-diagnose-early-but-comprehensive-cognitive-testing-could-change-that
Cognitive profiles for early diagnosis of Dementia with Lewy bodies (DLB) have been outlined in a new study, out today in Alzheimers Dementia. […] By pooling information from available publications, we were able to establish a cognitive profile that can differentiate DLB from Alzheimers before the dementia stage hits, which could better help inform the direction of care for people with these diseases. […] Researchers were able to identify consistencies in cognitive symptoms among people with DLB compared to people with Alzheimers in a meta-analysis of pre-dementia stage diagnoses. […] Identifying cognitive profiles gave us the outcome necessary to suggest guidelines that practitioners could easily be trained in to better tailor plans of care, Bayram said. […] Researchers say identifying the form of dementia early can guide future planning for both the person with dementia and their care partners, and ease disease by providing proper symptomatic treatment. […] Dr. Bayram said, overall, this study provides a promising step in advancing dementia prevention and care. […] Having validated clinical criteria to diagnose DLB before dementia hits means we can prevent it from happening instead of reacting to it after significant loss in the brain has occurred.
- #103 Lewy Body Dementia (LBD): What It Is, Symptoms & Treatmenthttps://my.clevelandclinic.org/health/diseases/17815-lewy-body-dementia
Diagnosing Lewy body dementia (LBD) can be challenging. Early LBD symptoms are often confused with symptoms found in other brain or psychiatric conditions. […] There are no medical tests that can diagnose Lewy body dementia with 100% accuracy. A diagnosis may require a group of specialists, including neurologists, geriatric psychiatrists, neuropsychologists, and geriatricians. […] Together, they can make the diagnosis of probable LBD based on the combined results of tests and symptoms. […] Along with a history of progressive cognitive decline that interferes with daily activities, a diagnosis of LBD is considered probable if two of the following four core features are present and is considered possible if only one is present: fluctuations in cognition and behavior, recurrent visual hallucinations, rapid eye movement (REM) sleep behavior disorder, and parkinsonism. […] Healthcare providers use the following strategies to help diagnose LBD and to rule out conditions that cause similar symptoms: detailed medical history and physical examination, imaging tests, neurological exam, blood tests, and sleep studies.
- #104 Diagnosis and Prognosis – Lewy Body Dementia Associationhttps://www.lbda.org/diagnosis-and-prognosis/
Doctors diagnose LBD based on the patients history, examination, and possibly other blood tests or brain scans to exclude other causes of dementia, movement disorders, or behavioral problems. […] There are no medical tests that can diagnose LBD with absolute certainty during life, so when a doctor suspects a patient has LBD based on clinical features, they are diagnosed with probable LBD. […] A diagnosis by specialists very familiar with LBD may be accurate up to 90% of the time. […] Primary care providers are an appropriate, first-step resource if you are experiencing any cognitive, emotional, or physical changes. […] However, neurologists generally possess the specialized knowledge necessary to diagnose specific types of dementia or movement disorders, as do geriatric psychiatrists and neuropsychologists.
- #105 Lewy Body Dementia: Diagnosis & Treatmenthttps://www.mentalhealth.com/library/diagnosis-treatment-lewy-body-dementia
Lewy body dementia can be difficult to diagnose. Doctors need to talk to the patient and their caregivers to make the diagnosis. […] The first step is usually seeing a primary care physician (PCP) if patients or their families recognize changes in thinking, movement, or behavior. PCPs may make preliminary assessments, or they may refer patients to a specialist, like a neurologist, geriatric psychiatrist, neuropsychologist, or geriatrician. […] A diagnosis of LBD is upsetting; however, it can bring relief in knowing whatâs causing the symptoms. […] As with any disease or illness, certain criteria need to be met for a diagnosis of LBD to be made. […] Here are the more common symptoms of LBD: Dementia: Problems with memory and thinking that affect daily life. […] Testing and diagnosing LBD is no simple task, and doctors use not only physical exams and clinical assessments but also several tests to differentiate LBD from other illnesses that present similar symptoms.
- #106 Diagnosis and Prognosis – Lewy Body Dementia Associationhttps://www.lbda.org/diagnosis-and-prognosis/
Doctors diagnose LBD based on the patients history, examination, and possibly other blood tests or brain scans to exclude other causes of dementia, movement disorders, or behavioral problems. […] There are no medical tests that can diagnose LBD with absolute certainty during life, so when a doctor suspects a patient has LBD based on clinical features, they are diagnosed with probable LBD. […] A diagnosis by specialists very familiar with LBD may be accurate up to 90% of the time. […] Primary care providers are an appropriate, first-step resource if you are experiencing any cognitive, emotional, or physical changes. […] However, neurologists generally possess the specialized knowledge necessary to diagnose specific types of dementia or movement disorders, as do geriatric psychiatrists and neuropsychologists.
- #107 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Evidence is building to support quantitative EEG as a DLB biomarker, characterized by specific abnormalities in posterior derivations. […] The management of patients with DLB is complex, requiring a multifaceted approach. […] Key elements include a thorough initial evaluation to ensure accurate diagnosis; early identification of signs and symptoms requiring intervention; engagement, education, and support of care providers; and a multidisciplinary team approach. […] Treatment of DLB is focused on the cognitive, psychiatric, motor, and other nonmotor symptoms that represent the core or most common features of the disorder. […] A combination of pharmacologic and nonpharmacologic approaches is optimal. […] The previously published methods for pathologic assessment and diagnosis of DLB should continue to be used with only a few modifications.
- #108 LBD Diagnosis & Assessment – Lewy Body Dementia Associationhttps://www.lbda.org/lbd-diagnosis-assessment/
Neurological Exam | Motor Assessment | Psychiatric Assessment | Sleep Assessment | Autonomic Assessment | Blood Test and Imaging | DLB Diagnostic Criteria | PDD Diagnostic Criteria […] A thorough neurological examination should be conducted by a clinician experienced in neurodegenerative disorders at the time of the initial assessment. Areas of importance include: Cognitive function, including language and speech Eye movements (can be abnormal in some types of atypical parkinsonism) Gait, balance, fine/coarse motor movements, reflexes Presence of involuntary movements such as tremor Cortical sensory findings, such as assessing sensory abilities to recognize writing on the skin or objects by touch Alteration of smell […] Clinical follow-up should be done in six-month intervals or whenever changes are reported by the patient or family.
- #109 Diagnosis and Management of Dementia with Lewy Bodies â Challenges and Current Practices | [current-page:pager]touchNEUROLOGYhttps://touchneurology.com/alzheimers-disease-dementia/journal-articles/diagnosis-and-management-of-dementia-with-lewy-bodies-challenges-and-current-practices/
Despite the availability of defined diagnostic criteria, there remain challenges to achieving a timely and accurate diagnosis of DLB. These broadly fall into three categories: the nature of the condition (heterogeneity and a varied presentation), limited knowledge (of the condition or diagnostic criteria), and different approaches to clinical care between centres and countries. […] While advances in technology, clinical research, and efforts to increase awareness of DLB may help address the first two challenges, it is also important to identify the key differences in clinical care pathways between countries, to determine the best possible practice and thereby optimise patient outcomes. […] One of the main problems with diagnosing DLB has to do with knowledge; even amongst neurologists or geriatricians very few know the exact criteria for a diagnosis. […] DLB is an underdiagnosed condition, with post-mortem studies reporting that DLB pathology contributes to at least 15% of all dementias, while clinical studies report a substantially lower prevalence (45%), which may also vary by geographical region. There is therefore, a clear medical need for early and accurate DLB diagnoses.
- #110 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
The Dementia with Lewy Bodies (DLB) Consortium has refined its recommendations about the clinical and pathologic diagnosis of DLB, updating the previous report, which has been in widespread use for the last decade. […] The revised DLB consensus criteria now distinguish clearly between clinical features and diagnostic biomarkers, and give guidance about optimal methods to establish and interpret these. […] Substantial new information has been incorporated about previously reported aspects of DLB, with increased diagnostic weighting given to REM sleep behavior disorder and 123iodine-metaiodobenzylguanidine (MIBG) myocardial scintigraphy. […] The diagnostic role of other neuroimaging, electrophysiologic, and laboratory investigations is also described. […] Minor modifications to pathologic methods and criteria are recommended to take account of Alzheimer disease neuropathologic change, to add previously omitted Lewy-related pathology categories, and to include assessments for substantia nigra neuronal loss.
- #111 Lewy Body Dementia (LBD): What It Is, Symptoms & Treatmenthttps://my.clevelandclinic.org/health/diseases/17815-lewy-body-dementia
Diagnosing Lewy body dementia (LBD) can be challenging. Early LBD symptoms are often confused with symptoms found in other brain or psychiatric conditions. […] There are no medical tests that can diagnose Lewy body dementia with 100% accuracy. A diagnosis may require a group of specialists, including neurologists, geriatric psychiatrists, neuropsychologists, and geriatricians. […] Together, they can make the diagnosis of probable LBD based on the combined results of tests and symptoms. […] Along with a history of progressive cognitive decline that interferes with daily activities, a diagnosis of LBD is considered probable if two of the following four core features are present and is considered possible if only one is present: fluctuations in cognition and behavior, recurrent visual hallucinations, rapid eye movement (REM) sleep behavior disorder, and parkinsonism. […] Healthcare providers use the following strategies to help diagnose LBD and to rule out conditions that cause similar symptoms: detailed medical history and physical examination, imaging tests, neurological exam, blood tests, and sleep studies.
- #112 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
Although dementia screens such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment are useful to characterize global impairment in DLB, neuropsychological assessment should include tests covering the full range of cognitive domains potentially affected. […] DLB fluctuations have been described in detail previously and are typically delirium-like, occurring as spontaneous alterations in cognition, attention, and arousal. […] Recurrent, complex visual hallucinations occur in up to 80% of patients with DLB and are a frequent clinical signpost to diagnosis. […] Spontaneous parkinsonian features, not due to antidopaminergic medications or stroke, are common in DLB, eventually occurring in over 85%. […] RBD is now included as a core clinical feature because it occurs frequently in autopsy-confirmed cases compared with non-DLB (76% vs 4%).
- #113 Diagnosis and management of dementia with Lewy bodieshttps://pmc.ncbi.nlm.nih.gov/articles/PMC5496518/
If one or more of these is found, associated with one or more core clinical features, probable DLB should be diagnosed. […] The utility of DAT imaging in distinguishing DLB from AD is well-established, with sensitivity (78%) and specificity (90%). […] 123Iodine-MIBG myocardial scintigraphy quantifies postganglionic sympathetic cardiac innervation, which is reduced in LB disease. […] PSG demonstration of REM sleep without atonia is desirable whenever feasible, since it is a highly specific predictor of Lewy-related pathology. […] These are biomarkers consistent with DLB that help the diagnostic evaluation, but without clear diagnostic specificity. […] Patients with AD show greater atrophy of medial temporal lobe (MTL) structures than patients with DLB, particularly the hippocampus, which is strongly correlated at autopsy with tangle rather than plaque or LB-related pathology.
- #114 Diagnostic Criteria for Dementia with Lewy Bodies: Updates and Future Directionshttps://www.e-jmd.org/journal/view.php?doi=10.14802/jmd.19052
The aim of this article is to describe the 2017 revised consensus criteria for the clinical diagnosis of dementia with Lewy bodies (DLB) with future directions for the diagnostic criteria. […] The 2017 revised criteria clearly distinguish between clinical features and diagnostic biomarkers. […] Future directions include the development of the criteria for early diagnosis (prodromal DLB) and the establishment of new biomarkers that directly indicate Lewy-related pathology, including -synuclein imaging, biopsies of peripheral tissues (skin, etc.) for the demonstration of -synuclein deposition, and biochemical markers (cerebrospinal fluid/blood), as well as the pathological evaluation of the sensitivity and specificity of the 2017 revised diagnostic criteria. […] The 2017 criteria distinguish clearly between clinical features and diagnostic biomarkers, and significant new information about previously reported aspects of DLB has been incorporated into the 2017 revised criteria, with increased diagnostic weighting given to RBD and MIBG.
- #115 Diagnosis and Management of Dementia with Lewy Bodies â Challenges and Current Practices | [current-page:pager]touchNEUROLOGYhttps://touchneurology.com/alzheimers-disease-dementia/journal-articles/diagnosis-and-management-of-dementia-with-lewy-bodies-challenges-and-current-practices/
An early diagnosis of DLB can also reduce hospital admissions (usually due to falls/fractures) and shorten the duration of any hospital stays by enabling the effective management of the condition and more targeted care focussed on specific hospitalisation triggers. […] The ability to more accurately diagnose patients with DLB would improve the selection of patients for clinical trials, enabling further research and development of novel treatments to improve patients outcomes. […] When a patient presents with possible dementia, DLB should always be considered in the differential diagnosis. As DLB is a complex condition, adherence to the current diagnostic criteria is essential and expert involvement in both the diagnosis and clinical management should occur as early as possible. […] Suspected cases of DLB should receive a specialised clinical assessment, including a full neurological examination. DaT-SPECT has been shown to be more specific than clinical diagnostic criteria for DLB and should be the modality of choice to differentiate DLB from Alzheimers disease.
- #116 Lewy Body Dementia (LBD): What It Is, Symptoms & Treatmenthttps://my.clevelandclinic.org/health/diseases/17815-lewy-body-dementia
Diagnosing Lewy body dementia (LBD) can be challenging. Early LBD symptoms are often confused with symptoms found in other brain or psychiatric conditions. […] There are no medical tests that can diagnose Lewy body dementia with 100% accuracy. A diagnosis may require a group of specialists, including neurologists, geriatric psychiatrists, neuropsychologists, and geriatricians. […] Together, they can make the diagnosis of probable LBD based on the combined results of tests and symptoms. […] Along with a history of progressive cognitive decline that interferes with daily activities, a diagnosis of LBD is considered probable if two of the following four core features are present and is considered possible if only one is present: fluctuations in cognition and behavior, recurrent visual hallucinations, rapid eye movement (REM) sleep behavior disorder, and parkinsonism. […] Healthcare providers use the following strategies to help diagnose LBD and to rule out conditions that cause similar symptoms: detailed medical history and physical examination, imaging tests, neurological exam, blood tests, and sleep studies.
- #117 Clinical diagnosis of Lewy body dementia | BJPsych Open | Cambridge Corehttps://www.cambridge.org/core/journals/bjpsych-open/article/clinical-diagnosis-of-lewy-body-dementia/90A3E4D7C82285B6682318A60F926607
Such differences in the diagnostic approach of clinicians highlights the need for a more standardised approach. […] This study also shows that a diagnosis of dementia is often delayed in patients with Parkinson’s disease. […] A delay in the diagnosis of dementia has important implications for patients and their caregivers.