Zespół tourette’a – Epidemiologia

Zespół tourette’a
Epidemiologia

Zespół Tourette’a (ZT) jest neurozwojowym zaburzeniem charakteryzującym się mimowolnymi tikami ruchowymi i wokalnymi, o rozpowszechnieniu u dzieci i młodzieży szacowanym na 0,3-1%, z metaanalizą wskazującą na 0,52-0,77%. W USA częstość występowania wynosi około 0,23-0,3% w populacji 0-17 lat, co odpowiada około 174 000 dzieci. ZT jest 3-4 razy częstszy u chłopców niż u dziewcząt, z wyraźnym spadkiem rozpowszechnienia u dorosłych (0,01-0,05%). Objawy pojawiają się zwykle między 5 a 15 rokiem życia, z maksymalnym nasileniem w wieku 10-12 lat, a około 50% pacjentów doświadcza remisji do 18 roku życia. Współwystępowanie zaburzeń psychicznych jest wysokie – ADHD dotyczy około 60% pacjentów, OCD 27-30%, a zaburzenia ze spektrum autyzmu 6-11%. Występuje także zwiększone ryzyko zaburzeń dwubiegunowych i innych problemów psychospołecznych.

Epidemiologia zespołu Tourette’a

Zespół Tourette’a (ZT) jest stosunkowo częstym zaburzeniem neurozwojowym charakteryzującym się występowaniem mimowolnych tików ruchowych i wokalnych. Przez wiele lat schorzenie to uważano za rzadkie, jednak badania epidemiologiczne przeprowadzone w ostatnich dekadach pokazały, że występuje ono znacznie częściej niż wcześniej sądzono.¹²

Częstotliwość występowania zespołu Tourette’a

Badania epidemiologiczne wskazują na zróżnicowane wskaźniki rozpowszechnienia ZT, co wynika w dużej mierze z różnic metodologicznych w badaniach oraz zmiennych kryteriów diagnostycznych. Większość aktualnych danych sugeruje, że częstość występowania zespołu Tourette’a u dzieci i młodzieży wynosi około 0,3-1% populacji.¹²³

Metaanaliza badań populacyjnych wykazała, że średnie rozpowszechnienie ZT wynosi około 0,52-0,77% wśród dzieci.¹² Najnowsze dane z badania National Survey of Children’s Health w USA z lat 2016-2022 wskazują na ogólną częstość występowania ZT na poziomie 0,23% wśród dzieci i młodzieży w wieku 0-17 lat, co odpowiada około 174 000 dzieci w latach 2016-2019.¹²

Centers for Disease Control and Prevention (CDC) szacuje, że rozpowszechnienie ZT wynosi około 3 przypadki na 1000 osób, co odpowiada 0,3% populacji dzieci i młodzieży.¹ Badania wskazują jednak, że rzeczywista częstość występowania może być wyższa, gdyż wiele przypadków pozostaje niezdiagnozowanych – według CDC nawet połowa dzieci z zespołem Tourette’a może nie być zdiagnozowana.¹²

Różnice wiekowe, płciowe i etniczne

Zespół Tourette’a charakteryzuje się wyraźnymi różnicami w rozpowszechnieniu w zależności od wieku, płci i grupy etnicznej:

Wiek: Częstość występowania ZT jest znacznie wyższa u dzieci i młodzieży niż u dorosłych. Dzieci w wieku 12-17 lat są około dwukrotnie częściej diagnozowane z ZT niż dzieci w wieku 6-11 lat.¹² Według danych z lat 2016-2022, rozpowszechnienie ZT według grup wiekowych wynosiło: <0,01% u dzieci w wieku 0-2 lat, 0,05% u dzieci w wieku 3-5 lat, 0,28% u dzieci w wieku 6-11 lat i 0,38% u młodzieży w wieku 12-17 lat.¹
Płeć: ZT jest 3-4 razy częstszy u chłopców niż u dziewcząt, a niektóre badania wskazują nawet na stosunek 5:1 czy nawet 10:1.¹²³ Badanie z lat 2016-2022 wykazało rozpowszechnienie 0,35% u chłopców i 0,11% u dziewcząt.¹ Warto zauważyć, że przewaga płci męskiej maleje wraz z wiekiem.¹
Etniczność: ZT występuje we wszystkich grupach etnicznych i rasowych. CDC w USA donosi, że ZT jest dwa razy częstszy u dzieci rasy białej niż u dzieci pochodzenia latynoskiego lub afroamerykańskiego, jednak może to wynikać z różnic w dostępie do opieki zdrowotnej, a nie z rzeczywistych różnic w występowaniu schorzenia.¹² Nie zaobserwowano istotnych różnic w częstości występowania ZT w zależności od statusu społeczno-ekonomicznego.¹

Zespół Tourette’a jako choroba o zasięgu światowym

Zespół Tourette’a został opisany niemal na całym świecie, a jego objawy kliniczne są podobne niezależnie od kraju pochodzenia, co podkreśla biologiczne podłoże tego zaburzenia.¹² Międzynarodowe rozpowszechnienie ZT szacuje się na około 1% większości kultur świata, choć w niektórych regionach obserwuje się niższą częstość występowania.¹

Badania przeprowadzone w Chinach wskazują na rozpowszechnienie ZT na poziomie około 0,43% wśród dzieci w wieku szkolnym, z wyraźną przewagą chłopców nad dziewczętami (stosunek 10,6:1).¹ W Azji odnotowano wzrost rocznej zapadalności na ZT i przewlekłe zaburzenia tikowe z 5,34 na 100 000 osobolat w 2007 roku do 6,87 na 100 000 osobolat w 2015 roku.¹

Region	Rozpowszechnienie ZT	Uwagi
Ogólne rozpowszechnienie światowe	0,3-1%	U dzieci i młodzieży
USA	0,23-0,3%	~174 000 dzieci (2016-2019)
Europa	0,4-3,8%	Znaczne zróżnicowanie w badaniach
Chiny	0,43%	Wśród dzieci w wieku szkolnym
Australia	~1%	1 na 100 dzieci w wieku szkolnym
Dorosli (ogólnie)	~0,01-0,05%	Znaczny spadek w porównaniu z dziećmi

Przebieg choroby i prognoza

Zespół Tourette’a rozwija się w dzieciństwie i zmienia się w czasie. Zgodnie z kryteriami diagnostycznymi, objawy muszą pojawić się przed 18 rokiem życia, chociaż DSM-IV-TR wymaga początku przed 21 rokiem życia.¹²

Średni wiek wystąpienia tików wynosi około 6-7 lat, przy czym proste tiki ruchowe (np. mruganie) pojawiają się zazwyczaj w wieku 5-10 lat, a tiki wokalne zaczynają się w wieku 8-15 lat.¹²³ Maksymalne nasilenie objawów ZT występuje zwykle w wieku 10-12 lat.¹

Średni czas od zauważenia pierwszych tików do postawienia diagnozy ZT wynosi około 2 lat.¹ W większości przypadków tiki zmniejszają się w okresie dojrzewania i wczesnej dorosłości, a czasem całkowicie zanikają – około 50% pacjentów jest praktycznie wolnych od tików w wieku 18 lat.¹² Jednakże u wielu osób tiki utrzymują się w dorosłości, a w niektórych przypadkach (10-20%) objawy mogą utrzymywać się, wahać lub nawet pogarszać w dorosłości.¹²

Najnowsze dane sugerują, że u kobiet może występować późniejszy szczyt objawów niż u mężczyzn, z mniejszą remisją w czasie, wraz z wyższym rozpowszechnieniem zaburzeń lękowych i nastroju.¹

Choroby współistniejące

Jednym z najważniejszych aspektów epidemiologii zespołu Tourette’a jest bardzo wysoka częstość występowania chorób współistniejących. Według danych CDC, około 83-86% dzieci z ZT ma co najmniej jedno dodatkowe zaburzenie psychiczne, behawioralne lub rozwojowe.¹²

Najczęstsze zaburzenia współistniejące obejmują:

ADHD – występuje u około 60% osób z ZT¹²
Zaburzenia obsesyjno-kompulsyjne (OCD) – ponad jedna trzecia osób z ZT ma również OCD, niektóre źródła podają około 27-30%¹²³
Zaburzenia zachowania¹
Zaburzenia lękowe i nastroju¹
Zaburzenia ze spektrum autyzmu – w przypadku ZT występują u 6-11% osób z ASD¹

Współwystępowanie ZT z zaburzeniem dwubiegunowym również występuje częściej niż można by oczekiwać przypadkowo. Badanie North Dakota Longitudinal Tourette Syndrome Surveillance Project wykazało, że wśród 205 pacjentów z zespołem Tourette’a, 15 miało współistniejące zaburzenie dwubiegunowe, a ryzyko rozwoju tego zaburzenia było ponad czterokrotnie wyższe niż oczekiwano.¹

W porównaniu do dzieci bez ZT, dzieci z zespołem Tourette’a:

Częściej mają przewlekłe schorzenia zdrowotne¹
Rzadziej otrzymują skuteczną koordynację opieki¹
Częściej mają rodziców z wysokim poziomem stresu i frustracji¹
Częściej borykają się z problemami w zakresie kompetencji społecznych¹
Częściej padają ofiarą znęcania się¹

Wyzwania w badaniach epidemiologicznych zespołu Tourette’a

Badania epidemiologiczne zespołu Tourette’a napotykają na szereg wyzwań, które wpływają na zróżnicowanie zgłaszanych wskaźników rozpowszechnienia:¹²

Brak jednolitej definicji i kryteriów diagnostycznych¹
Zmienne manifestacje kliniczne zespołu¹
Różnice w metodologiach badań epidemiologicznych¹²
Różne kulturowe skłonności osób z tikami do poszukiwania pomocy medycznej¹
Potencjalne różnice genetyczne i alleliczne w różnych grupach etnicznych¹
Silne obciążenie związane z selekcją w kierunku osób ze współistniejącymi schorzeniami¹
Fakt, że wiele osób z tikami nie zdaje sobie sprawy z ich występowania lub nie szuka diagnozy¹

Biorąc pod uwagę możliwość istnienia znacznej liczby niezdiagnozowanych przypadków, niezbędne są zakrojone na szeroką skalę badania populacyjne w celu uzyskania dokładniejszych szacunków rozpowszechnienia.¹²

Nadzór i monitoring epidemiologiczny

Prowadzenie nadzoru epidemiologicznego nad zespołem Tourette’a i innymi przewlekłymi zaburzeniami tikowymi jest istotne dla:

Dokumentowania obciążenia zdrowia publicznego związanego z tymi zaburzeniami¹
Generowania danych, które można wykorzystać do działań edukacyjnych i informacyjnych¹
Poprawy zdrowia i dobrostanu osób z zaburzeniami tikowymi i ich rodzin¹
Lepszego zrozumienia czynników ryzyka i etiologii schorzenia¹

W Stanach Zjednoczonych Centers for Disease Control and Prevention (CDC) prowadzi nadzór nad zespołem Tourette’a w ramach National Survey of Children’s Health. Podobne inicjatywy są potrzebne w innych krajach, aby lepiej zrozumieć globalny wpływ i obciążenie związane z ZT.¹²

Obecnie brakuje wiarygodnych szacunków dotyczących rozpowszechnienia ZT i innych zaburzeń tikowych u dorosłych, ale oczekuje się, że będą one znacznie niższe niż u dzieci, ponieważ tiki często zanikają wraz z wiekiem.¹² Potrzebne są dalsze badania, aby lepiej określić rozpowszechnienie ZT i innych zaburzeń tikowych we wszystkich grupach wiekowych.¹²

Znaczenie ekonomiczne i społeczne zespołu Tourette’a

Zespół Tourette’a ma istotne implikacje ekonomiczne i społeczne, zarówno dla osób dotkniętych tym schorzeniem, jak i dla systemów opieki zdrowotnej. Według danych rynkowych, wartość rynku leczenia zespołu Tourette’a w siedmiu głównych rynkach osiągnęła 1,818 mld dolarów w 2023 roku, z prognozą wzrostu do 2,710 mld dolarów do 2034 roku, przy średnim rocznym wskaźniku wzrostu na poziomie 4,54%.¹²

Stany Zjednoczone mają największą pulę pacjentów z zespołem Tourette’a i stanowią również największy rynek dla jego leczenia.¹² Rosnące rozpowszechnienie dziedzicznych zaburzeń neurologicznych oraz wzrost przypadków powikłań porodowych, takich jak płyn owodniowy zanieczyszczony smółką i przedwczesne pęknięcie błon płodowych, są głównymi czynnikami napędzającymi rynek zespołu Tourette’a.¹²

Pełen wpływ zespołu Tourette’a na zdrowie publiczne nie jest jeszcze w pełni zrozumiany. Na szczęście, wraz ze wzrostem świadomości społecznej dotyczącej tego schorzenia, profesjonaliści medyczni poznają więcej informacji o zespole i najlepszych sposobach jego leczenia.¹

Przyszłe kierunki badawcze

Przyszłe badania epidemiologiczne zespołu Tourette’a powinny koncentrować się na:

Uzyskaniu dokładniejszych szacunków rozpowszechnienia wśród różnych grup wiekowych i demograficznych¹
Badaniu rozpowszechnienia ZT u dorosłych, które jest słabo udokumentowane¹
Zbadaniu względnego wkładu czynników genetycznych i środowiskowych w ekspresję tików¹
Zidentyfikowaniu czynników ryzyka związanych z wystąpieniem i utrzymywaniem się ZT¹
Zrozumieniu współwystępowania z innymi zaburzeniami¹
Badaniu przebiegu choroby w późniejszej dorosłości, który nie jest dobrze opisany¹

Badania te pomogą w lepszym zrozumieniu etiologii i patogenezy schorzenia oraz przyczynią się do opracowania skutecznych strategii leczenia.¹

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Materiały źródłowe

#1 Tourette syndrome – Wikipedia
https://en.wikipedia.org/wiki/Tourette_syndrome
Tourette syndrome was once thought to be rare: in 1972, the US National Institutes of Health (NIH) believed there were fewer than 100 cases in the United States, and a 1973 registry reported only 485 cases worldwide. However, numerous studies published since 2000 have consistently demonstrated that the prevalence is much higher. […] Because of the high male prevalence of TS, there is limited data on females from which conclusion about gender-based differences can be drawn; caution may be warranted in extending conclusions to females regarding the characteristics and treatment of tics based on studies of mostly males. A 2021 review stated that females may see a later peak than males in symptoms, with less remission over time, along with a higher prevalence of anxiety and mood disorders.
#1 Tourette syndrome: MedlinePlus GeneticsLock
https://medlineplus.gov/genetics/condition/tourette-syndrome/
Tourette syndrome is a complex disorder characterized by repetitive, sudden, and involuntary movements or noises called tics. […] Although the exact incidence of Tourette syndrome is uncertain, it is estimated to affect 1 to 10 in 1,000 children. This disorder occurs in populations and ethnic groups worldwide, and it is more common in males than in females. […] A variety of genetic and environmental factors likely play a role in causing Tourette syndrome. […] The inheritance pattern of Tourette syndrome is unclear. Although the features of this condition can cluster in families, many genetic and environmental factors are likely to be involved.
#1 Tourette syndrome | MedLink Neurology
https://www.medlink.com/articles/tourette-syndrome
Males consistently outnumber females in large studies by a ratio of around 4:1. […] In comparison to males, female patients with Tourette syndrome have later age at symptom onset and a longer delay in diagnosis. […] Meta-analysis of 13 studies of children yielded a prevalence of Tourette syndrome of 0.77%; the boys-to-girls ratio was 1.06%: 0.25%, and meta-analysis of two studies assessing adults with Tourette syndrome revealed a prevalence of 0.05%. […] The prevalence of tic disorders was higher in all studies performed in the special education population. […] Among the 21 population-based prevalence studies, the pooled Tourette syndrome population prevalence estimate was 0.52%.
#1 Data and Statistics on Tourette Syndrome | Tourette Syndrome | CDC
https://www.cdc.gov/tourette-syndrome/data/index.html
We do not know how many children have Tourette syndrome (TS). Studies estimate that 1 out of 162 children have TS. […] A CDC study using parent-reported data found that 1 out of every 333 (0.3%) children 317 years of age in the United States have received a diagnosis of TS; this is about 174,000 children in 20162019. […] This suggests that about half of children with TS may not be diagnosed. […] Among children diagnosed with TS in 2016-2017, 44% have been reported as having moderate or severe TS. […] Boys were about three times more likely to have TS than girls. […] Children from all racial and ethnic groups or socio-economic backgrounds had similar estimates for diagnosis of TS. […] Children 1217 years of age were more than twice as likely to have a diagnosis of TS than children 611 years of age.
#1 Tourette Syndrome and Other Tic Disorders: Practice Essentials, Background, Pathophysiology
https://emedicine.medscape.com/article/289457-overview
The exact prevalence of TS is not known. This is in part because of the lack of agreement on a precise definition of the disorder. Observational studies have suggested a prevalence of 0.7%, with up to 4.2% of all children having some type of tic disorder. […] The Centers for Disease Control and Prevention (CDC) estimate that the prevalence of a lifetime diagnosis of TS is 3 cases per 1,000 population. This estimate is based on parent report of TS diagnosed by a physician or other healthcare provider from a nationally representative sample of US children and adolescents aged 6-17 years. […] A recent epidemiological review suggests a 1% international prevalence of TS. […] However, prevalence figures for TS have varied between 0.4% and 3.8%; in addition, different figures have been reported for some parts of the world and races, with a lower rate in sub-Saharan black Africans.
#1 Prevalence of Tourette syndrome among children and adolescents in the United States, 2016-2022 – University of Iowa
https://iro.uiowa.edu/esploro/outputs/journalArticle/Prevalence-of-Tourette-syndrome-among-children/9984721206302771?institution=01IOWA_INST
Tourette syndrome (TS) is a neurodevelopmental disorder. The prevalence of TS in 2016-2017 has been reported; however, little is known about the current prevalence and trend in children and adolescents with TS. This study aimed to estimate the prevalence and trend of Tourette syndrome (TS) among US children and adolescents aged 0-17 years from 2016 to 2022. We analyzed data from a nationally representative sample of 278,472 children and adolescents aged 0-17 years who participated in the 2016-2022 National Survey of Children’s Health (NSCH), a nationwide, population-based, cross-sectional survey of US children and adolescents. TS was defined as the affirmative response in the questionnaire completed by a parent or guardian. Among the 278,472 children and adolescents enrolled, 754 had been diagnosed with TS, with an overall prevalence of 0.23% in all children and adolescents aged 0-17 years. The weighted prevalence by age group was lower than 0.01% in children aged 0-2 years, 0.05% in children aged 3-5 years, 0.28% in children aged 6-11 years, and 0.38% in adolescents aged 12-17 years. There were significant sex and racial/ethnic differences in the overall prevalence of diagnosed TS (i.e., 0.35% in boys and 0.11% in girls, 0.22% in Hispanics, 0.28% in non-Hispanic whites and 0.16% in non-Hispanic blacks). There was no significant change in the estimated prevalence of TS from 2016 to 2022. Based on nationally representative data, this study found that the national prevalence of TS among the US children and adolescents differed by sex and race/ethnicity but remained stable from 2016 to 2022.
#1 Epidemiology of Tourette Syndrome
https://www.mdpi.com/2076-3425/15/5/426
The prevalence of tic disorders is higher in all studies performed in special education populations. […] The annual incidence of all tic disorders in the general population has been reported to have a statistically significant increase from 0.017 to 0.40 per 100,000 (from year 2003 to 2020) indicating an upward trend. […] The cumulative incidence of TS and CTDs in the general population has been estimated at 0.27% by age 41 years in a Swedish study. […] The reported prevalence of TS varied widely across age groups, ranging from 0.007% to 0.05% in children under 6 years, 0.04% to 0.28% in those aged 6 to 11 years, and 0.19% to 0.54% among individuals aged 12 to 18 years. […] The male-to-female ratio is reported to be between 2:1 and 9:1, but mostly around 4:1 in childhood and adolescent populations; the male predominance decreases with age.
#1 Tourette Syndrome and Other Tic Disorders – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK499958/
Tourette syndrome, also referred to as Tourette disorder, is a common neurodevelopmental disorder affecting up to 1 percent of the population. […] Over the last 30 years, many studies have attempted to determine the prevalence of Tourette syndrome. The large variation in methodology has led to a reported prevalence between 3:1000 and 8:1000 children. Males are more commonly affected than females with a ratio of 3:1 to 4:1. The Center for Disease Control and Prevention (CDC) in the United States reports that GTS is twice as common in Caucasian children as compared to Hispanic or African-American children, but at this time it is not clear whether differences in access to care bias this figure.
#1 Tourette syndrome in children and adolescents: aetiology, presentation and treatment | BJPsych Advances | Cambridge Core
https://www.cambridge.org/core/journals/bjpsych-advances/article/tourette-syndrome-in-children-and-adolescents-aetiology-presentation-and-treatment/5615A2FDD12BE7107EB4296CFCD4E1CC
Tourette syndrome has now been described almost worldwide. Males are more commonly affected, the male/female ratio being 3 or 4 to 1. Clinical characteristics are similar irrespective of the country of origin, highlighting the biological nature of Tourette syndrome. […] Tourette syndrome was once considered to be rare in the general population, but a comprehensive review shows that at least eight studies with similar multistaged methods documented remarkably consistent findings and suggests a global prevalence of between 0.4 and 3.8% for youngsters between the ages of 5 and 18 years, with a calculated prevalence (from raw data) of 1% worldwide, apart from Sub-Saharan Africa. […] A more recent review of my work over 35 years, as well as that of others, suggests an updated figure of 0.85%: in any event, the important fact is that Tourette syndrome is more common than was previously thought. The prevalence in special educational populations, such as individuals with intellectual disabilities and emotional and behavioural disorders, is much higher, and in the case of autism spectrum disorders (ASD) it is as high as 611%.
#1 The international prevalence, epidemiology, and clinical phenomenology of Tourette syndrome: A cross-cultural perspective – University of Western Australia (UWA)
https://onesearch.library.uwa.edu.au/discovery/fulldisplay/cdi_crossref_primary_10_1016_j_jpsychores_2009_07_010/61UWA_INST:UWA
The overall international prevalence of Tourette syndrome (TS) is 1% in the majority of cultures of the world. Both TS and tics are certainly more obvious and may be more common in younger people. Moreover, TS is seen less frequently in some cultures. However, in all cultures where it has been reported, the phenomenology is similar, highlighting the biological underpinnings of the disorder. This article reviews the international prevalence, epidemiology, and clinical phenomenology of TS, from a cross-cultural perspective. […] Epidemiology […] Prevalence […] Tourette syndrome
#1
https://link.springer.com/article/10.1007/s10654-005-2953-z
An epidemiological survey on Tourette syndrome (TS) in a developing country is relatively scarce. This study was conducted to investigate the prevalence and distribution of TS in children and juveniles aged 716 years in Wenzhou of P.R. China. A total of 9742 children and adolescents were included in this survey. Cross-sectional study with stratified-cluster sampling method was used. The prevalence of TS among school-age children was estimated to be an average of 0.43%. The ratio of male to female was 10.6 to 1 (0.74% for males and 0.07% for females). Pupils in the age range of 716 years are more likely to have comorbid disorders. The mean age at onset of TS was 7.72.7 years, with 45.2% of them at the age of 67. The rate of delayed diagnosis, misdiagnosis and misclassification of the syndrome were 78.6, 42.9 and 23.8%, respectively. This survey supports that TS is a common disease prevalent amongst children and juveniles in Wenzhou area of P.R. China, and its incidence was correlated with age and sex and often misdiagnosed and misclassified.
#1
https://link.springer.com/article/10.1007/s00127-022-02253-7
The incidence of Tourette syndrome and chronic tic disorders has seldom been evaluated in Asia. […] From 2007 to 2015, the age- and sex-standardized incidence increased from 5.34 (95% confidence interval [CI] 5.06-5.62) per 100,000 person-years to 6.87 (95% CI 6.53-7.21) per 100,000 person-years. In children and adolescents, the age- and sex-standardized incidence increased from 19.58 (95% CI 18.42-20.75) per 100,000 person-years to 31.79 (95% CI 30.09-33.49) per 100,000 person-years. In adults, the age- and sex-standardized incidence decreased from 2.01 (95% CI 1.79-2.23) per 100,000 person-years to 1.24 (95% CI 1.07-1.42) per 100,000 person-years. The age- and sex-standardized prevalence increased from 37.51 (95% CI 36.75-38.27) per 100,000 people in 2007 to 84.18 (95% CI 83.02-85.35) per 100,000 people in 2015. […] The annual incidence rates of TS and chronic tic disorders increased in childhood and adolescence but decreased in adulthood from 2007 to 2015. The prevalence rates increased over the same period.
#1 Data and Statistics on Tourette Syndrome | Tourette Syndrome | CDC
https://www.cdc.gov/tourette-syndrome/data/index.html
Tourette syndrome is a disorder that develops in childhood and changes over time. […] The average time from initially noticing tics to receiving a diagnosis of TS was about 2 years. […] In most cases, tics decrease during adolescence and early adulthood, and sometimes disappear entirely; however, many experience tics into adulthood and, in some cases, tics can become worse in adulthood.
#1 Tourette Syndrome and Other Tic Disorders | Doctor
https://patient.info/doctor/tourette-syndrome-and-other-tic-disorders
How common is Tourette syndrome?(Epidemiology)1 4 […] The prevalence is 0.3-1%, The typical age of onset is 5 to 6 years. Male:female ratio is 3-4.3:1. […] It is also thought to be more common in Ashkenazi jews (not confirmed in some studies) and patients of Mediterranean origin. 10% of patients have an affected first-degree relative and twin studies report 90% concordance in monozygotes. […] Onset is usually in childhood – 2-14 years of age (mean age of 7 years).
#1 Frontiers | Tourette Syndrome: A Mini-Review
https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2018.00139/full
The symptoms of TS begin already in childhood and the estimated prevalence is 3â9/1,000 children younger than the school age. […] TS is more common in boys than in girls with a prevalence of 3â4:1. […] Literature states that the maximum in the severity of TS manifestations occurs at the age of 10â12 years. […] Most patients will have complete or nearly complete remission of the disorder after 21 years of age. […] In 10â20% of cases, TS symptoms fluctuate, persist, or even worsen. […] Occurrence of tics is often preceded by behavioral disordersâmost commonly ADHDâat the age of 3 years. […] Both of these psychiatric comorbidities often persist until adulthood, even during TS remission.
#1 Tourette Syndrome and Other Tic Disorders: Practice Essentials, Background, Pathophysiology
https://emedicine.medscape.com/article/289457-overview
By definition, TS has onset in childhood (usually age 5-10 y). The Diagnostic and Statistical Manual of Mental Disorders, 4th Edition Text Revision (DSM-IV-TR) requires onset before age 21. […] A multicenter study of German families showed that this definition is arbitrary but reasonable. In relatives of TS probands who also had tics, the tics usually started when the individual was younger than 18 years, but 5 relatives had otherwise typical histories for TS with onset after the age of 21 years. […] One study of a birth cohort with TS showed that the most common age for tic onset was 9-14 years. […] The CDC found that diagnosed TS is approximately twice as common in persons 12-17 years old compared with those 6-11 years old. […] The modal age of symptom onset increases roughly with complexity: Simple tics are reported earliest in life, while complex tics, compulsions, obsessions, and sensory tics, and/or premonitory sensations tend to develop somewhat later. Generally, simple motor tics (eg, blinking) are first noticed when the individual is approximately 5-10 years old, with vocal tics starting at 8-15 years. […] Fortunately, by age 18 years, approximately 50% of patients are essentially free of tics. Tic severity tends to peak in early to mid adolescence and wanes thereafter. Tics may persist into adulthood but their severity is almost always diminished.
#1 Data and Statistics on Tourette Syndrome | Tourette Syndrome | CDC
https://www.cdc.gov/tourette-syndrome/data/index.html
About 83% of children with Tourette syndrome have another disorder. […] More than one third of people with TS also have obsessive-compulsive disorder. […] Having TS can have an impact on many areas of life, particularly when children have another condition in addition to TS. […] Compared to children without TS, children with TS were more likely to have a chronic health condition. […] Compared to children without TS, children with TS were less likely to have received effective coordination of care. […] Compared to children without TS, children with TS were more likely to have parents with high levels of stress and frustration. […] Compared to children without TS, children with TS were more likely to struggle with social competence. […] Compared to children without TS, children with TS were more likely to be the victim of bullying.
#1
https://step2.medbullets.com/psychiatry/121837/tourette-syndrome
Epidemiology […] Incidence […] variable […] […] […] Demographics […] more common in males (4:1) […] mean age of tic onset is approximately 5.6 years of age […] […] […] approximately 90% of patients have a comorbid psychiatric disorder such as […] attention deficit hyperactivity disorder (~60% of cases) […] obsessive-compulsive disorder (~27% of cases)
#1 Comorbid Touretteâs and Bipolar Disorders | Pediatric Neurology Briefs
https://pediatricneurologybriefs.com/articles/10.15844/pedneurbriefs-9-12-6
Of 205 patients with Tourettes disorder in the North Dakota Longitudinal Tourette Syndrome Surveillance Project, 15 had comorbid bipolar disorder. The ratio of males to females was 5.2:1. The estimated risk of developing bipolar disorder among the study group of children and adolescents with Tourettes disorder was more than four times higher than the level expected by chance, significant at the 0.05 level. Males were at greater risk than females, and adults had comorbid developmental disorders as well. Shared common neural pathways, especially basal ganglia structures, and genetic factors may explain the comorbidity. […] The frequency and intensity of motor and vocal tics were positively correlated with manic symptoms and inversely with depressive symptoms.
#1 Tourette Syndrome and Other Tic Disorders: Practice Essentials, Background, Pathophysiology
https://emedicine.medscape.com/article/289457-overview
Several possible reasons for variations in reported rates have been suggested. These include the lack of a definitive diagnosis of TS; the variable manifestations of the syndrome; the methods employed in different epidemiological studies; different cultural propensities of people with tics to seek medical care; and possibly genetic and allelic differences in different races. […] TS has been described in people of many ethnic origins. In the US, the CDC found that a diagnosis of TS was twice as likely for non-Hispanic white persons than for Hispanic and non-Hispanic black persons. However, this observation may be influenced by differences in seeking of healthcare rather than in actual symptomatic prevalence. […] Boys are more likely than girls to have chronic tics. The male-to-female ratio in TS and in chronic motor tic disorder is approximately 5:1 (between 2:1 and 10:1 in different studies).
#1 Tourette syndrome – Wikipedia
https://en.wikipedia.org/wiki/Tourette_syndrome
Tourette syndrome is a common but underdiagnosed condition that reaches across all social, racial and ethnic groups. It is three to four times more frequent in males than in females. Observed prevalence rates are higher among children than adults because tics tend to remit or subside with maturity and a diagnosis may no longer be warranted for many adults. Up to 1% of the overall population experiences tic disorders, including chronic tics and transient (provisional or unspecified) tics in childhood. Chronic tics affect 5% of children and transient tics affect up to 20%. […] Many individuals with tics do not know they have tics, or do not seek a diagnosis, so epidemiological studies of TS reflect a strong ascertainment bias towards those with co-occurring conditions. The reported prevalence of TS varies according to the source, age, and sex of the sample; the ascertainment procedures; and diagnostic system, with a range reported between 0.15% and 3.0% for children and adolescents.
#1 Epidemiology of Tourette Syndrome
https://www.mdpi.com/2076-3425/15/5/426
The reported prevalence of TS varies considerably, ranging from approximately 0.30% to 0.77% among individuals under 18 years of age and around 0.01% in the general population. […] Given the possibility of a substantial number of undiagnosed cases, large-scale, population-based studies are essential for obtaining more accurate prevalence estimates.
#1 Surveillance of Public Health Burden of Persistent Tic Disorders including Tourette Syndrome in Children, Adolescents, and Young Adults | Research Funding
https://researchfunding.duke.edu/surveillance-public-health-burden-persistent-tic-disorders-including-tourette-syndrome-children
Eligible applicants should have the infrastructure and capacity to identify, collect, and disseminate information on outcomes associated with persistent tic disorders (PTD) including Tourette syndrome (TS) among children, adolescents, and young adults. […] The purpose of the NOFO is to conduct surveillance of persistent tic disorders (PTD) including Tourette syndrome (TS) among children, adolescents, and young adults to: Document the public health burden (i.e., outcomes) of these disorders Generate data that can be used to inform education and outreach activities to improve the health and well-being of individuals with tic disorders and their families.
#1 The Genetic Epidemiology for Tics – Tourette Association of America
https://tourette.org/grant/the-genetic-epidemiology-for-tics/
Tics and Tourette Syndrome (TS) often appear to be more frequent in some families than in the general population. This suggests that either tics have a hereditary component or that family members may unconsciously copy tics from each other. […] The aim of this study is to investigate the contribution of genes and the environment on tics and TS in a large epidemiological sample of adult Dutch twins, their siblings, parents and spouses. […] To date, no large-scale epidemiological twin studies have investigated the relative contribution of genes and environmental factors on tic expression. […] Information learned should elucidate the contribution of genes and environment to tics and TS.
#1 The Spectrum of Tourette Syndrome and Tic Disorders: A Consensus by Scientific Advisors of the Tourette Association of America – Tourette Association of America
https://tourette.org/spectrum-tourette-syndrome-tic-disorders-consensus-scientific-advisors-tourette-association-america/
Tourette syndrome (TS) belongs to a spectrum of neurodevelopmental conditions referred to as Tic Disorders. […] TS and other Tic Disorders are not rare. Tics occur in as many as 1 in 5 school-aged children. Some occurrences may be transient, while others will persist into adolescence and adulthood. […] The combined prevalence of TS and other Tic Disorders is estimated to be over 10 cases per 1,000 (1%, 1:100), suggesting that over million children have a Tic Disorder in the US. […] The best estimate for the prevalence of TS is 6 cases per 1,000 (0.6%, 1:160) children, which means that approximately 300,000 children have the condition in the US (based on 2010 Census data). […] There are currently no reliable prevalence estimates of TS and other Tic Disorders in adults, but are expected to be substantially less than in children as tics often decline with aging.
#1 The Spectrum of Tourette Syndrome and Tic Disorders: A Consensus by Scientific Advisors of the Tourette Association of America – Tourette Association of America
https://tourette.org/spectrum-tourette-syndrome-tic-disorders-consensus-scientific-advisors-tourette-association-america/
More studies are needed to determine the prevalence of Tic Disorders in adults, but this is expected to be significantly less than in children due to the fact that tic symptoms abate in later adolescence or early adulthood. […] When the occurrence of TS and other chronic Tic Disorders are combined, the aggregated prevalence is over 10 per 1000 (1%, 1:100). […] The best estimate of the prevalence of TS only is approximately 6 per 1,000 (0.6%, 1:160) children. […] Therefore, based on 2010 US Census Data, over 500,000 children have a chronic Tic Disorder (TS and CMVTD combined), or over 300,000 children have TS alone, in the US. […] Further research is needed to provide better estimates of the prevalence of TS and other Tic Disorders across all age groups.
#1 Tourette Syndrome Market: Epidemiology, Industry Trends, Share, Size, Growth, Opportunity, and Forecast 2024-2034
https://www.researchandmarkets.com/reports/5969616/tourette-syndrome-market-epidemiology-industry?srsltid=AfmBOooH7nWSqg_I1veEBqkRyo4ZNfPZuVqhziCVq_HyXrTOmaWVwl3d
The 7 major Tourette syndrome markets reached a value of US$ 1,818.1 Million in 2023. Looking forward, the publisher expects the 7MM to reach US$ 2,710.2 Million by 2034, exhibiting a growth rate (CAGR) of 4.54% during 2023-2034. […] The increasing prevalence of inherited neurological disorders and the rising cases of delivery complications, such as meconium-stained amniotic fluid and premature rupture of the membranes, are primarily driving the Tourette syndrome market. […] This report provides an exhaustive analysis of the Tourette syndrome market in the United States, EU5 (Germany, Spain, Italy, France, and United Kingdom) and Japan. This includes treatment practices, in-market, and pipeline drugs, share of individual therapies, market performance across the seven major markets, market performance of key companies and their drugs, etc.
#1 Tourette Syndrome Market: Epidemiology, Industry Trends, Share, Size, Growth, Opportunity, and Forecast 2024-2034
https://www.researchandmarkets.com/reports/5969616/tourette-syndrome-market-epidemiology-industry?srsltid=AfmBOooH7nWSqg_I1veEBqkRyo4ZNfPZuVqhziCVq_HyXrTOmaWVwl3d
According to the report the United States has the largest patient pool for Tourette syndrome and also represents the largest market for its treatment. […] The report also provides the current and future patient pool across the seven major markets. […] What is the number of prevalent cases (2018-2034) of Tourette syndrome across the seven major markets? […] What is the size of the Tourette syndrome patient pool (2018-2023) across the seven major markets? […] What would be the forecasted patient pool (2024-2034) across the seven major markets? […] What are the key factors driving the epidemiological trend of Tourette syndrome? […] What will be the growth rate of patients across the seven major markets?
#1 How Many People Have Tourettes? | Tourette Syndrome Data & Statistics
https://www.therecoveryvillage.com/mental-health/tourettes/tourettes-statistics/
Tourette syndrome is a type of tic disorder. Awareness of Tourettes statistics can help those impacted find appropriate care and treatment. […] Since many people with Tourettes are not diagnosed correctly, it is hard to say exactly how common Tourette Syndrome is. One estimate says that about 0.6% of children, or 1 in every 162 kids, has Tourettes. A study conducted by the Centers for Disease Control and Prevention found that 1 in 360 kids, or about 0.3% of children, had a diagnosis of Tourettes, meaning that only about half of children with Tourettes are diagnosed. […] The prevalence of Tourette Syndrome is much higher in boys than in girls. Boys are 3 to 4 times as likely to have Tourettes as girls. Adolescents 12 years or older are twice as likely to be diagnosed with Tourettes as children aged 6 to 11. Tourettes is more common in non-Hispanic white children than children of other ethnicities. […] The full public health impact of Tourettes is not fully understood. Fortunately, as public awareness of Tourette Syndrome increases, medical professionals learn more about the condition and the best ways to manage it.
#1 How Much Do We Know about Adult-onset Primary Tics? Prevalence, Epidemiology, and Clinical Features | Tremor and Other Hyperkinetic Movements
https://tremorjournal.org/articles/10.5334/tohm.373
Tic disorders are generally considered to be of pediatric onset; however, reports of adult-onset tics exist in the literature. […] The epidemiologic characteristics, clinical phenomenology, and optimal treatment of adult-onset tics have not been ascertained. […] We know little about adult-onset tic disorders, particularly ones without a secondary association or cause. […] There have been no studies to date that have ascertained the prevalence or incidence of adult-onset tic disorders in the general population. […] The prevalence of comorbidities in adult-onset tics has not been systematically studied. […] A number of risk factors have been associated with TS including gestational and perinatal factors, drug abuse, streptococcal infections, psychologic trauma, family history of tics, and co-existent medical and psychological disorders. […] The disease course of TS is not well delineated past early adulthood as studies have not followed patients past their late twenties, and usually not that long. […] The current review constitutes the first comprehensive review of the literature of adult-onset primary tic disorders.
#1 Epidemiology of Tourette Syndrome
https://www.mdpi.com/2076-3425/15/5/426
Epidemiology of Tourette Syndrome: Background/Objectives: Tourette syndrome (TS) is a neurodevelopmental disorder, manifested by tics and a variety of behavioral comorbidities that cluster strongly within families, suggesting a combination of genetic and environmental risk factors. Understanding the incidence and prevalence across different populations provides valuable insights into the etiology and pathogenesis of the condition and aids in the development of effective treatment strategies. […] The prevalence of TS is estimated to be about 1% in children and adolescents and approximately 0.01% in adults, with a male-to-female (M:F) ratio of about 4:1. […] Despite substantial methodological variability, our review of the literature indicates that TS is a relatively common neurobehavioral disorder, affecting nearly 1% of children, especially boys.
#2 Tourette syndrome | MedLink Neurology
https://www.medlink.com/articles/tourette-syndrome
Tourette syndrome is among the most common movement disorders. Various epidemiological studies have shown that 20% to 30% of children exhibit tics sometime during childhood and 2% to 3% of children develop some features of Tourette syndrome, although the worldwide prevalence of Tourette syndrome in children has been reported to range from 0.3% to 0.8%. […] Correctly ascertaining its prevalence is fraught with difficulty, though, and an accurate lifetime prevalence rate for Tourette syndrome has not been established. It is clear that systematic searches for Tourette syndrome turn up much higher prevalence rates than those obtained through conventional means. […] Prevalence estimates for chronic tic disorders generally hover in the 0.4% to 2% range. […] The prevalence is considerably higher in special education classes.
#2 Epidemiology of Tourette Syndrome
https://www.mdpi.com/2076-3425/15/5/426
Epidemiology of Tourette Syndrome: Background/Objectives: Tourette syndrome (TS) is a neurodevelopmental disorder, manifested by tics and a variety of behavioral comorbidities that cluster strongly within families, suggesting a combination of genetic and environmental risk factors. Understanding the incidence and prevalence across different populations provides valuable insights into the etiology and pathogenesis of the condition and aids in the development of effective treatment strategies. […] The prevalence of TS is estimated to be about 1% in children and adolescents and approximately 0.01% in adults, with a male-to-female (M:F) ratio of about 4:1. […] Despite substantial methodological variability, our review of the literature indicates that TS is a relatively common neurobehavioral disorder, affecting nearly 1% of children, especially boys.
#2 Tourette syndrome in children and adolescents: aetiology, presentation and treatment | BJPsych Advances | Cambridge Core
https://www.cambridge.org/core/journals/bjpsych-advances/article/tourette-syndrome-in-children-and-adolescents-aetiology-presentation-and-treatment/5615A2FDD12BE7107EB4296CFCD4E1CC
Tourette syndrome has now been described almost worldwide. Males are more commonly affected, the male/female ratio being 3 or 4 to 1. Clinical characteristics are similar irrespective of the country of origin, highlighting the biological nature of Tourette syndrome. […] Tourette syndrome was once considered to be rare in the general population, but a comprehensive review shows that at least eight studies with similar multistaged methods documented remarkably consistent findings and suggests a global prevalence of between 0.4 and 3.8% for youngsters between the ages of 5 and 18 years, with a calculated prevalence (from raw data) of 1% worldwide, apart from Sub-Saharan Africa. […] A more recent review of my work over 35 years, as well as that of others, suggests an updated figure of 0.85%: in any event, the important fact is that Tourette syndrome is more common than was previously thought. The prevalence in special educational populations, such as individuals with intellectual disabilities and emotional and behavioural disorders, is much higher, and in the case of autism spectrum disorders (ASD) it is as high as 611%.
#2 Prevalence of Tourette syndrome among children and adolescents in the United States, 2016-2022 – University of Iowa
https://iro.uiowa.edu/esploro/outputs/journalArticle/Prevalence-of-Tourette-syndrome-among-children/9984721206302771?institution=01IOWA_INST
Tourette syndrome (TS) is a neurodevelopmental disorder. The prevalence of TS in 2016-2017 has been reported; however, little is known about the current prevalence and trend in children and adolescents with TS. This study aimed to estimate the prevalence and trend of Tourette syndrome (TS) among US children and adolescents aged 0-17 years from 2016 to 2022. We analyzed data from a nationally representative sample of 278,472 children and adolescents aged 0-17 years who participated in the 2016-2022 National Survey of Children’s Health (NSCH), a nationwide, population-based, cross-sectional survey of US children and adolescents. TS was defined as the affirmative response in the questionnaire completed by a parent or guardian. Among the 278,472 children and adolescents enrolled, 754 had been diagnosed with TS, with an overall prevalence of 0.23% in all children and adolescents aged 0-17 years. The weighted prevalence by age group was lower than 0.01% in children aged 0-2 years, 0.05% in children aged 3-5 years, 0.28% in children aged 6-11 years, and 0.38% in adolescents aged 12-17 years. There were significant sex and racial/ethnic differences in the overall prevalence of diagnosed TS (i.e., 0.35% in boys and 0.11% in girls, 0.22% in Hispanics, 0.28% in non-Hispanic whites and 0.16% in non-Hispanic blacks). There was no significant change in the estimated prevalence of TS from 2016 to 2022. Based on nationally representative data, this study found that the national prevalence of TS among the US children and adolescents differed by sex and race/ethnicity but remained stable from 2016 to 2022.
#2 How Many People Have Tourettes? | Tourette Syndrome Data & Statistics
https://www.therecoveryvillage.com/mental-health/tourettes/tourettes-statistics/
Tourette syndrome is a type of tic disorder. Awareness of Tourettes statistics can help those impacted find appropriate care and treatment. […] Since many people with Tourettes are not diagnosed correctly, it is hard to say exactly how common Tourette Syndrome is. One estimate says that about 0.6% of children, or 1 in every 162 kids, has Tourettes. A study conducted by the Centers for Disease Control and Prevention found that 1 in 360 kids, or about 0.3% of children, had a diagnosis of Tourettes, meaning that only about half of children with Tourettes are diagnosed. […] The prevalence of Tourette Syndrome is much higher in boys than in girls. Boys are 3 to 4 times as likely to have Tourettes as girls. Adolescents 12 years or older are twice as likely to be diagnosed with Tourettes as children aged 6 to 11. Tourettes is more common in non-Hispanic white children than children of other ethnicities. […] The full public health impact of Tourettes is not fully understood. Fortunately, as public awareness of Tourette Syndrome increases, medical professionals learn more about the condition and the best ways to manage it.
#2 Tourette Syndrome and Other Tic Disorders: Practice Essentials, Background, Pathophysiology
https://emedicine.medscape.com/article/289457-overview
By definition, TS has onset in childhood (usually age 5-10 y). The Diagnostic and Statistical Manual of Mental Disorders, 4th Edition Text Revision (DSM-IV-TR) requires onset before age 21. […] A multicenter study of German families showed that this definition is arbitrary but reasonable. In relatives of TS probands who also had tics, the tics usually started when the individual was younger than 18 years, but 5 relatives had otherwise typical histories for TS with onset after the age of 21 years. […] One study of a birth cohort with TS showed that the most common age for tic onset was 9-14 years. […] The CDC found that diagnosed TS is approximately twice as common in persons 12-17 years old compared with those 6-11 years old. […] The modal age of symptom onset increases roughly with complexity: Simple tics are reported earliest in life, while complex tics, compulsions, obsessions, and sensory tics, and/or premonitory sensations tend to develop somewhat later. Generally, simple motor tics (eg, blinking) are first noticed when the individual is approximately 5-10 years old, with vocal tics starting at 8-15 years. […] Fortunately, by age 18 years, approximately 50% of patients are essentially free of tics. Tic severity tends to peak in early to mid adolescence and wanes thereafter. Tics may persist into adulthood but their severity is almost always diminished.
#2 Tourette Syndrome and Other Tic Disorders – StatPearls – NCBI Bookshelf
https://www.ncbi.nlm.nih.gov/books/NBK499958/
Tourette syndrome, also referred to as Tourette disorder, is a common neurodevelopmental disorder affecting up to 1 percent of the population. […] Over the last 30 years, many studies have attempted to determine the prevalence of Tourette syndrome. The large variation in methodology has led to a reported prevalence between 3:1000 and 8:1000 children. Males are more commonly affected than females with a ratio of 3:1 to 4:1. The Center for Disease Control and Prevention (CDC) in the United States reports that GTS is twice as common in Caucasian children as compared to Hispanic or African-American children, but at this time it is not clear whether differences in access to care bias this figure.
#2 Tourette Syndrome and Other Tic Disorders: Practice Essentials, Background, Pathophysiology
https://emedicine.medscape.com/article/289457-overview
Several possible reasons for variations in reported rates have been suggested. These include the lack of a definitive diagnosis of TS; the variable manifestations of the syndrome; the methods employed in different epidemiological studies; different cultural propensities of people with tics to seek medical care; and possibly genetic and allelic differences in different races. […] TS has been described in people of many ethnic origins. In the US, the CDC found that a diagnosis of TS was twice as likely for non-Hispanic white persons than for Hispanic and non-Hispanic black persons. However, this observation may be influenced by differences in seeking of healthcare rather than in actual symptomatic prevalence. […] Boys are more likely than girls to have chronic tics. The male-to-female ratio in TS and in chronic motor tic disorder is approximately 5:1 (between 2:1 and 10:1 in different studies).
#2 The international prevalence, epidemiology, and clinical phenomenology of Tourette syndrome: A cross-cultural perspective – University of Western Australia (UWA)
https://onesearch.library.uwa.edu.au/discovery/fulldisplay/cdi_crossref_primary_10_1016_j_jpsychores_2009_07_010/61UWA_INST:UWA
The overall international prevalence of Tourette syndrome (TS) is 1% in the majority of cultures of the world. Both TS and tics are certainly more obvious and may be more common in younger people. Moreover, TS is seen less frequently in some cultures. However, in all cultures where it has been reported, the phenomenology is similar, highlighting the biological underpinnings of the disorder. This article reviews the international prevalence, epidemiology, and clinical phenomenology of TS, from a cross-cultural perspective. […] Epidemiology […] Prevalence […] Tourette syndrome
#2 Frontiers | Tourette Syndrome: A Mini-Review
https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2018.00139/full
The symptoms of TS begin already in childhood and the estimated prevalence is 3â9/1,000 children younger than the school age. […] TS is more common in boys than in girls with a prevalence of 3â4:1. […] Literature states that the maximum in the severity of TS manifestations occurs at the age of 10â12 years. […] Most patients will have complete or nearly complete remission of the disorder after 21 years of age. […] In 10â20% of cases, TS symptoms fluctuate, persist, or even worsen. […] Occurrence of tics is often preceded by behavioral disordersâmost commonly ADHDâat the age of 3 years. […] Both of these psychiatric comorbidities often persist until adulthood, even during TS remission.
#2 CDC – Did you know that 86% of children with Tourette…FacebookVerified accountShared with Public
https://www.facebook.com/cdc/posts/did-you-know-that-86-of-children-with-tourette-syndrome-also-have-been-diagnosed/10156818175046026/
Did you know that 86% of children with Tourette Syndrome also have been diagnosed with at least one additional mental, behavioral, or developmental disorder? […] Get the facts on TS: https://bit.ly/2WsZxN3
#2 Azthena logo with the word Azthena
https://www.news-medical.net/health/Definition-and-DSM-5-Classification-Tic-Disorders.aspx
Tourette syndrome (TS) is reported worldwide, with estimated prevalence from 0.3% to 0.9%. […] It affects boys 3 to 4 times more frequently than girls. […] The vast majority of individuals with TS have behavioral and/or emotional symptoms or disorders; only 12% across all ages are reported to have only tics without other associated conditions. […] From a worldwide dataset, ADHD is the most common comorbid psychiatric disorder, and accounts for about 55% of the behavioral findings. […] Other disorders, such as mood and anxiety disorders and learning disorders, are also frequently present.
#2
https://step2.medbullets.com/psychiatry/121837/tourette-syndrome
Epidemiology […] Incidence […] variable […] […] […] Demographics […] more common in males (4:1) […] mean age of tic onset is approximately 5.6 years of age […] […] […] approximately 90% of patients have a comorbid psychiatric disorder such as […] attention deficit hyperactivity disorder (~60% of cases) […] obsessive-compulsive disorder (~27% of cases)
#2 The Spectrum of Tourette Syndrome and Tic Disorders: A Consensus by Scientific Advisors of the Tourette Association of America – Tourette Association of America
https://tourette.org/spectrum-tourette-syndrome-tic-disorders-consensus-scientific-advisors-tourette-association-america/
Further research is needed to provide better estimates of the prevalence of TS and other Tic Disorders across all age groups. […] The causes of TS and other Tic Disorders remain unclear, but genetic and environmental factors appear to play a role in the development of the conditions. […] Prevalence estimates of tics, TS and other Tic Disorders vary widely due to differences in study methods. […] It is clear, however, that these conditions are not rare as they occur with rates significantly higher than the 200,000 person threshold under which the prevalence of a condition must remain to be considered a rare disorder according to the US Rare Diseases Act 2002. […] Overall, the best average estimate for TS is approximately 6 per 1,000 children. […] Therefore, the combined average prevalence of TS and CMVTD is estimated to be approximately 12 per 1,000 children.
#2 The Spectrum of Tourette Syndrome and Tic Disorders: A Consensus by Scientific Advisors of the Tourette Association of America – Tourette Association of America
https://tourette.org/spectrum-tourette-syndrome-tic-disorders-consensus-scientific-advisors-tourette-association-america/
More studies are needed to determine the prevalence of Tic Disorders in adults, but this is expected to be significantly less than in children due to the fact that tic symptoms abate in later adolescence or early adulthood. […] When the occurrence of TS and other chronic Tic Disorders are combined, the aggregated prevalence is over 10 per 1000 (1%, 1:100). […] The best estimate of the prevalence of TS only is approximately 6 per 1,000 (0.6%, 1:160) children. […] Therefore, based on 2010 US Census Data, over 500,000 children have a chronic Tic Disorder (TS and CMVTD combined), or over 300,000 children have TS alone, in the US. […] Further research is needed to provide better estimates of the prevalence of TS and other Tic Disorders across all age groups.
#2 How Much Do We Know about Adult-onset Primary Tics? Prevalence, Epidemiology, and Clinical Features | Tremor and Other Hyperkinetic Movements
https://tremorjournal.org/articles/10.5334/tohm.373
Tic disorders are generally considered to be of pediatric onset; however, reports of adult-onset tics exist in the literature. […] The epidemiologic characteristics, clinical phenomenology, and optimal treatment of adult-onset tics have not been ascertained. […] We know little about adult-onset tic disorders, particularly ones without a secondary association or cause. […] There have been no studies to date that have ascertained the prevalence or incidence of adult-onset tic disorders in the general population. […] The prevalence of comorbidities in adult-onset tics has not been systematically studied. […] A number of risk factors have been associated with TS including gestational and perinatal factors, drug abuse, streptococcal infections, psychologic trauma, family history of tics, and co-existent medical and psychological disorders. […] The disease course of TS is not well delineated past early adulthood as studies have not followed patients past their late twenties, and usually not that long. […] The current review constitutes the first comprehensive review of the literature of adult-onset primary tic disorders.
#2 Tourette Syndrome Market Size, Trends and Forecast 2024-2034
https://www.imarcgroup.com/tourette-syndrome-market
The Tourette syndrome market has been comprehensively analyzed in IMARC’s new report titled „Tourette Syndrome Market: Epidemiology, Industry Trends, Share, Size, Growth, Opportunity, and Forecast 2024-2034”. […] The increasing prevalence of inherited neurological disorders and the rising cases of delivery complications, such as meconium-stained amniotic fluid and premature rupture of the membranes, are primarily driving the Tourette syndrome market. […] IMARC Group’s new report provides an exhaustive analysis of the Tourette syndrome market in the United States, EU5 (Germany, Spain, Italy, France, and United Kingdom) and Japan. This includes treatment practices, in-market, and pipeline drugs, share of individual therapies, market performance across the seven major markets, market performance of key companies and their drugs, etc.
#2 Tourette Syndrome Market Size, Trends and Forecast 2024-2034
https://www.imarcgroup.com/tourette-syndrome-market
According to the report the United States has the largest patient pool for Tourette syndrome and also represents the largest market for its treatment. […] Historical, current, and future epidemiology scenario […] What is the number of prevalent cases (2018-2034) of Tourette syndrome across the seven major markets? […] What is the size of the Tourette syndrome patient pool (2018-2023) across the seven major markets? […] What would be the forecasted patient pool (2024-2034) across the seven major markets? […] What are the key factors driving the epidemiological trend of Tourette syndrome? […] What will be the growth rate of patients across the seven major markets?
#3 Tourette Syndrome and Other Tic Disorders: Practice Essentials, Background, Pathophysiology
https://emedicine.medscape.com/article/289457-overview
The exact prevalence of TS is not known. This is in part because of the lack of agreement on a precise definition of the disorder. Observational studies have suggested a prevalence of 0.7%, with up to 4.2% of all children having some type of tic disorder. […] The Centers for Disease Control and Prevention (CDC) estimate that the prevalence of a lifetime diagnosis of TS is 3 cases per 1,000 population. This estimate is based on parent report of TS diagnosed by a physician or other healthcare provider from a nationally representative sample of US children and adolescents aged 6-17 years. […] A recent epidemiological review suggests a 1% international prevalence of TS. […] However, prevalence figures for TS have varied between 0.4% and 3.8%; in addition, different figures have been reported for some parts of the world and races, with a lower rate in sub-Saharan black Africans.
#3 Tourette Syndrome and Other Tic Disorders: Practice Essentials, Background, Pathophysiology
https://emedicine.medscape.com/article/289457-overview
Several possible reasons for variations in reported rates have been suggested. These include the lack of a definitive diagnosis of TS; the variable manifestations of the syndrome; the methods employed in different epidemiological studies; different cultural propensities of people with tics to seek medical care; and possibly genetic and allelic differences in different races. […] TS has been described in people of many ethnic origins. In the US, the CDC found that a diagnosis of TS was twice as likely for non-Hispanic white persons than for Hispanic and non-Hispanic black persons. However, this observation may be influenced by differences in seeking of healthcare rather than in actual symptomatic prevalence. […] Boys are more likely than girls to have chronic tics. The male-to-female ratio in TS and in chronic motor tic disorder is approximately 5:1 (between 2:1 and 10:1 in different studies).
#3 Touretteâs Disorder (307.23) | Abnormal Psychology
https://courses.lumenlearning.com/atd-herkimer-abnormalpsych/chapter/tourettes-disorder-307-23/
A person with Tourettes has about a 50% chance of passing the genes to one of his or her children. Based on cases in North America and Europe, it tends to be most common is males. There is a male to female ratio of 3:1 or 4:1 and a mean onset age of about 7 years old. Vocal tics usually occur later than motor tics, around a mean of age 11.
#3 Touretteâs Disorder (307.23) | Abnormal Psychology
https://courses.lumenlearning.com/atd-herkimer-abnormalpsych/chapter/tourettes-disorder-307-23/
Epidemiology shows the high relevance of Tourettes Disorder to Obsessive-Compulsive Disorder; around 30% of children diagnosed with OCD also have Tourettes. On the reverse side, 60% of children with Tourettes will also generally have some form of OCD (Wagner, 2006, p.65). Furthermore, there are also signs of self-injurous behaviors, sleep disturbances, aggression, anxiety, and depression. […] Since TS develops in the adolescence years and must be present before age 18, children are more likely to develop TS than adults. In fact, TS is known, for most cases, to decrease in severity and frequency and can even disappear entirely by early adulthood. TS has been reported in a wide variety of both racial and ethnic groups. TS occurs more frequently in males than females with a ratio of 1.5:3 times more likely (APA, 2000).