Afty
Epidemiologia

Afty (recurrent aphthous stomatitis, RAS) są najczęstszą chorobą błony śluzowej jamy ustnej, dotykającą 20-25% populacji światowej, z dużymi różnicami regionalnymi (5-66%). Występują częściej u kobiet, zwłaszcza w okresie owulacji i przed miesiączką, a ich początek przypada zwykle na wiek 10-19 lat. Występują trzy główne podtypy: małe (70-85%, owrzodzenia <1 cm, gojące się w 7-14 dni bez blizn), duże (10%, >1 cm, gojenie do 6 tygodni, często z bliznami) oraz opryszczkowate (5-10%, liczne drobne owrzodzenia 2-3 mm). Diagnostyka opiera się na obrazie klinicznym i wywiadzie, z różnicowaniem względem opryszczki wargowej (HSV-1). W przypadku utrzymujących się zmian >14 dni wskazane są badania dodatkowe, w tym biopsja i badania krwi. Epidemiologicznie afty wykazują komponent genetyczny (dziedziczność 8,2%, wariant rs76830965 w genie IL12A, OR 0,72) oraz związek z genami prozapalnymi (IL-1, IL-6, TNF-α, MMP-9).

  1. Epidemiologia aft
    1. Rozpowszechnienie geograficzne
    2. Demograficzne czynniki ryzyka
    3. Czynniki genetyczne i dziedziczność
  2. Typy aft i ich epidemiologia
    1. Afty małe (minor)
    2. Afty duże (major)
    3. Afty opryszczkowate (herpetiformne)
  3. Nadzór epidemiologiczny i znaczenie kliniczne
    1. Trudności diagnostyczne
    2. Afty jako marker chorób systemowych
    3. Czynniki ryzyka i modyfikatory
    4. Znaczenie nadzoru epidemiologicznego
  4. Implikacje dla zdrowia publicznego
    1. Kolejne rozdziały

Epidemiologia aft

Afty (łac. recurrent aphthous stomatitis, RAS) stanowią najczęstszą chorobę błony śluzowej jamy ustnej, dotykającą znaczną część populacji światowej. Szacuje się, że choroba ta występuje u około 20-25% światowej populacji, co czyni ją najbardziej rozpowszechnionym schorzeniem śluzówki jamy ustnej 123. Należy jednak podkreślić, że różne badania epidemiologiczne wskazują na znaczne wahania w częstości występowania aft – od 5% do nawet 66% populacji, w zależności od badanej grupy i zastosowanej metodologii 45.

Rozpowszechnienie geograficzne

Afty występują na całym świecie, jednak częściej obserwuje się je w krajach rozwiniętych 6. Badania epidemiologiczne prowadzone w różnych populacjach dostarczają danych zarówno na temat występowania punktowego (point prevalence), jak i częstości występowania w ciągu życia (lifetime prevalence). W Stanach Zjednoczonych i Kanadzie częstość występowania aft w ciągu życia waha się między 46,4% a 69,4% 7. W populacji pediatrycznej w USA punktowa częstość występowania wynosi 1,2-1,5%, natomiast częstość występowania w ciągu życia sięga 40,18% 8.

W Europie częstość występowania aft w ciągu życia wynosi 36-37% 9. Badania przeprowadzone w innych regionach świata wskazują na następujące wskaźniki częstości występowania:

  • Szwecja (występowanie punktowe): 0,5-2% 10
  • Turcja (występowanie punktowe): 1,2-2,3% 11
  • Jordania (występowanie w ciągu życia): 78% 12
  • Iran (występowanie w ciągu życia): 25,2% 13
  • Irak (Sulaimani City) (występowanie w ciągu życia): 28,2% 14
  • Indie (występowanie punktowe w północnych Indiach): 1,5% 15
  • Indie (występowanie w ciągu życia): 50,3% 16

Demograficzne czynniki ryzyka

Afty częściej występują u kobiet niż u mężczyzn 171819. Szczególnie zauważalny wzrost występowania aft u kobiet obserwuje się podczas owulacji lub przed miesiączką, natomiast w okresie ciąży często dochodzi do remisji choroby 20. Epidemiolodzy sugerują, że różnice hormonalne mogą być jednym z czynników odpowiedzialnych za tę dysproporcję płciową 21.

Pierwszy epizod aft najczęściej pojawia się w dzieciństwie lub okresie dojrzewania 2223. Szczyt zachorowań przypada na wiek 10-19 lat 2425. Około 80% osób z aftami doświadcza pierwszego epizodu przed 30. rokiem życia 26. Po 50. roku życia częstość występowania aft znacząco spada 27.

W badaniach zaobserwowano również zróżnicowanie etniczne w występowaniu aft. Na przykład w Stanach Zjednoczonych afty mogą występować trzy razy częściej u osób o jasnej skórze niż u osób o ciemnej skórze 28. Choroba ta częściej dotyka również osoby z wyższych grup społeczno-ekonomicznych 2930.

Czynniki genetyczne i dziedziczność

Występowanie aft wykazuje komponent genetyczny. U około 40% pacjentów z aftami stwierdza się występowanie tego schorzenia w rodzinie 313233. Badania genomu (GWAS) przeprowadzone na dużej grupie osób (n=461 106) oszacowały dziedziczność aft na poziomie 8,2% (95% CI: 6,4%, 9,9%) 34.

W badaniach tych zidentyfikowano 97 wariantów genetycznych, które modyfikują ryzyko rozwoju aft, a wyniki te zostały potwierdzone w niezależnej kohorcie (n=355 744) 35. Najsilniejsze powiązanie po metaanalizie wykazano dla wariantu rs76830965, znajdującego się w pobliżu genu IL12A na chromosomie 3 (OR 0,72; 95% CI: 0,71, 0,73; P=4,4e-483) 36.

Badania wykazały, że osoby posiadające określone warianty genów zaangażowanych w odpowiedź prozapalną są bardziej narażone na rozwój aft. Do tych genów należą interleukiny (IL-1, IL-6), czynnik martwicy nowotworu-α (TNF-α), E-selektyna i metaloproteinaza macierzy 9 (MMP-9) 37.

Typy aft i ich epidemiologia

Afty dzielą się na trzy główne podtypy: małe (minor), duże (major) i opryszczkowate (herpetiformne). Każdy z nich charakteryzuje się odmiennym przebiegiem klinicznym i częstością występowania 38.

Afty małe (minor)

Afty małe są zdecydowanie najczęstszym podtypem, stanowiącym około 70-85% wszystkich przypadków aft 3940. Są to płytkie, owalne lub okrągłe owrzodzenia o średnicy mniejszej niż 1 cm, otoczone czerwoną obwódką zapalną i pokryte żółtawym lub białawym nalotem 41. Afty małe goją się zwykle w ciągu 7-14 dni bez pozostawienia blizny 42.

Afty małe są najczęstszą postacią nawracających aft u dzieci. Około 1% amerykańskich dzieci może cierpieć na nawracające afty, przy czym początek choroby przypada przed 5. rokiem życia 43.

Afty duże (major)

Afty duże stanowią około 10% wszystkich przypadków aft 4445. Charakteryzują się większym rozmiarem (ponad 1 cm średnicy), głębszym naciekiem i dłuższym czasem gojenia, który może wynosić nawet 6 tygodni 46. Afty duże często pozostawiają blizny 47.

Początek aft dużych typowo przypada po okresie dojrzewania i mogą one utrzymywać się przez całe życie, chociaż po osiągnięciu późnej dorosłości epizody stają się znacznie rzadsze 48.

Afty opryszczkowate (herpetiformne)

Afty opryszczkowate (herpetiformne) stanowią najmniej liczną grupę, obejmującą około 5-10% wszystkich przypadków aft 4950. Charakteryzują się występowaniem licznych (od 10 do 100), drobnych (2-3 mm) owrzodzeń, które mogą się zlewać tworząc większe zmiany 51.

Afty opryszczkowate typowo pojawiają się po raz pierwszy w drugiej dekadzie życia; w większości przypadków początek przypada przed 30. rokiem życia. Częstotliwość i nasilenie epizodów mogą wzrastać w trzeciej i czwartej dekadzie życia, a następnie zmniejszać się wraz z wiekiem 52.

Nadzór epidemiologiczny i znaczenie kliniczne

Trudności diagnostyczne

Diagnoza aft opiera się głównie na obrazie klinicznym i wywiadzie medycznym 53. Afty należy różnicować z opryszczką wargową (herpes labialis), która w przeciwieństwie do aft jest zakaźna i wywoływana przez wirusa opryszczki pospolitej (HSV-1) 5455.

Jeśli zmiany utrzymują się dłużej niż 14 dni, konieczne jest przeprowadzenie dodatkowych badań diagnostycznych w celu wykluczenia chorób ogólnoustrojowych 5657. W przypadku uporczywych aft lekarze mogą zalecić badania krwi, posiewy ze zmian lub biopsję 58.

Afty jako marker chorób systemowych

Nawracające afty mogą być objawem różnych chorób ogólnoustrojowych, co ma istotne znaczenie dla nadzoru epidemiologicznego. Afty mogą występować w przebiegu następujących schorzeń 5960:

  • Choroby zapalne jelit (choroba Leśniowskiego-Crohna, wrzodziejące zapalenie jelita grubego) – afty występują u około 10% pacjentów z chorobą Leśniowskiego-Crohna i 4% pacjentów z wrzodziejącym zapaleniem jelita grubego 61
  • Celiakia 62
  • Zespół Behçeta 63
  • Cykliczna neutropenia 64
  • Zespół MAGIC 65
  • Zespół PFAPA 66
  • Zakażenie HIV/AIDS 67

Duże badanie kohortowe wykazało, że pacjenci z nawracającymi aftami mają zwiększone ryzyko rozwoju chorób autoimmunologicznych, takich jak choroba Behçeta, toczeń rumieniowaty układowy (SLE), zesztywniające zapalenie stawów kręgosłupa, choroba Hashimoto, choroba Gravesa-Basedowa i reumatoidalne zapalenie stawów (RZS) 68.

Czynniki ryzyka i modyfikatory

Na występowanie aft wpływają różne czynniki środowiskowe i fizjologiczne, które należy uwzględnić w nadzorze epidemiologicznym 69:

  • Stres – zdarzenia stresowe istotnie zwiększają ryzyko wystąpienia epizodów nawracających aft, prawie trzykrotnie zwiększając szanse ich pojawienia się 70
  • Niedobory żywieniowe – szczególnie witaminy B12, kwasu foliowego, żelaza i cynku 7172
  • Alergie pokarmowe – szczególnie na pomidory i niektóre orzechy 73
  • Urazy mechaniczne – np. ugryzienie policzka 74
  • Substancje chemiczne – np. laurylosiarczan sodu obecny w niektórych pastach do zębów 7576
  • Zmiany w mikrobiocie jamy ustnej 77
  • Czynniki socjoekonomiczne – w populacjach borykających się z trudnościami socjoekonomicznymi (bieda, brak bezpieczeństwa żywnościowego, ciężkie warunki pracy) częstość występowania nawracających aft może być znacząco wyższa 78

Znaczenie nadzoru epidemiologicznego

Nadzór epidemiologiczny nad aftami jest istotny z kilku powodów:

  1. Wysoka częstość występowania – afty są najczęstszą chorobą błony śluzowej jamy ustnej, dotykającą znaczną część populacji 79
  2. Marker chorób systemowych – afty mogą być wczesnym objawem poważnych chorób ogólnoustrojowych 80
  3. Wpływ na jakość życia – pomimo że afty są zwykle łagodne i samoograniczające się, powodują znaczny dyskomfort i ból, co wpływa na jakość życia pacjentów 81
  4. Zróżnicowanie populacyjne – częstość występowania aft różni się znacząco w zależności od regionu geograficznego, wieku, płci i statusu socjoekonomicznego, co wymaga dostosowania strategii profilaktycznych i terapeutycznych 8283

Szczególną uwagę w nadzorze epidemiologicznym należy zwrócić na grupy wysokiego ryzyka, takie jak młodzież, kobiety, osoby z obciążonym wywiadem rodzinnym oraz pacjenci z chorobami autoimmunologicznymi lub zaburzeniami przewodu pokarmowego 84.

Implikacje dla zdrowia publicznego

Wysoka częstość występowania aft w populacji ogólnej, a szczególnie w określonych grupach ryzyka, ma istotne implikacje dla zdrowia publicznego 85. Raport Głównego Chirurga Stanów Zjednoczonych szacuje, że nawracające afty dotykają do 25% populacji ogólnej, przy czym liczby te mogą być wyższe w wybranych grupach, takich jak studenci kierunków medycznych 86.

Szczególne znaczenie ma fakt, że afty często dotykają młodsze osoby, w tym dzieci i młodzież. Około 30% dzieci dotkniętych aftami doświadcza nawrotów przez wiele lat po pierwszym epizodzie 8788.

Z punktu widzenia zdrowia publicznego istotna jest edukacja pacjentów na temat czynników ryzyka i metod zapobiegania aftom 89. Szczególnie ważne jest zwrócenie uwagi na możliwe powiązania między nawracającymi aftami a chorobami ogólnoustrojowymi, co może przyczynić się do wcześniejszego wykrywania tych schorzeń 90.

Lekarze dentyści pracujący w społecznościach o niższym statusie socjoekonomicznym powinni być szczególnie wyczuleni na zwiększoną częstość występowania aft i stosować wielokulturowe podejście w edukacji zdrowotnej, aby skutecznie adresować dynamiczne problemy zdrowotne w zróżnicowanych populacjach 91.

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  1. 10.04.2026
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Materiały źródłowe

  • #1 Recurrent Aphthous Stomatitis – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK431059/
    Recurrent aphthous stomatitis is a relatively common condition, affecting up to 25% of the worldwide population. […] It usually first appears in childhood or adolescence. […] It may develop as an individual entity or as part of a systemic condition, like Behet disease. […] Out of the 3 subtypes, minor aphthous ulcers are the most prevalent (70% of cases), whereas major (10%) and herpetiform (10%) types are less common.
  • #2 Aphthous stomatitis – Wikipedia
    https://en.wikipedia.org/wiki/Aphthous_stomatitis
    Aphthous stomatitis affects between 5% and 66% of people, with about 20% of individuals in most populations having the condition to some degree. […] This makes it the most common disease of the oral mucosa. […] Aphthous stomatitis occurs worldwide, but is more common in developed countries. […] Within nations, it is more common in higher socioeconomic groups. […] Males and females are affected in an equal ratio, and the peak age of onset between 10 and 19 years. […] About 80% of people with aphthous stomatitis first developed the condition before the age of 30. […] There have been reports of ethnic variation. For example, in the United States, aphthous stomatitis may be three times more common in white-skinned people than black-skinned people.
  • #3 Aphthous Ulcers: Causes, Types, and Treatments
    https://ostrowonline.usc.edu/aphthous-ulcers-causes-types-treatments/
    Aphthous ulcers (oral aphthous), commonly known as canker sores, present a prevalent oral concern affecting 20-25% of the population. […] According to retrospective population-based studies in different countries and regions, the prevalence can range from 1.4% to 21.4%. (Liu et al., 2022). […] Recurrent aphthous stomatitis is a chronic inflammatory disease of the oral mucosa. It is characterized by painful mouth ulcers that an underlying disease cannot explain (Sanchez, et al., 2020) and may be present first in childhood or adolescence and affect up to 25% of the general population and 3-month recurrence rates are as high as 50%, and are more common in females ulcers can appear alone or secondary to distinct disease processes. (Gasmi et al., 2021). […] Stressful life events are significantly associated with the onset of recurrent aphthous stomatitis (RAS) episodes, nearly tripling the odds of occurrence, highlighting the profound impact of psychosocial factors (psychological and social factors) or social determinants that affect health.
  • #4 Aphthous stomatitis – Wikipedia
    https://en.wikipedia.org/wiki/Aphthous_stomatitis
    Aphthous stomatitis affects between 5% and 66% of people, with about 20% of individuals in most populations having the condition to some degree. […] This makes it the most common disease of the oral mucosa. […] Aphthous stomatitis occurs worldwide, but is more common in developed countries. […] Within nations, it is more common in higher socioeconomic groups. […] Males and females are affected in an equal ratio, and the peak age of onset between 10 and 19 years. […] About 80% of people with aphthous stomatitis first developed the condition before the age of 30. […] There have been reports of ethnic variation. For example, in the United States, aphthous stomatitis may be three times more common in white-skinned people than black-skinned people.
  • #5 What Is a Canker Sore (Aphthous Ulcer)? – Consensus: AI Search Engine for Research
    https://consensus.app/home/blog/what-is-a-canker-sore-aphthous-ulcer/
    Canker sores, or aphthous ulcers, are a prevalent and painful condition of the oral mucosa with a multifactorial etiology. […] Canker sores, also known as aphthous ulcers or aphthae, are a common and painful condition affecting the oral mucosa. […] Aphthous ulcers are the most common condition of the oral mucosa in developed countries, affecting around 20% of the general population, predominantly young adults. […] Studies have shown a prevalence rate ranging from 5% to 20%, depending on the population and methods used. […] A descriptive study reported a prevalence of 3.93% among patients, with a higher incidence in females and the second decade of life being the most affected age group.
  • #6 Aphthous stomatitis – Wikipedia
    https://en.wikipedia.org/wiki/Aphthous_stomatitis
    Aphthous stomatitis affects between 5% and 66% of people, with about 20% of individuals in most populations having the condition to some degree. […] This makes it the most common disease of the oral mucosa. […] Aphthous stomatitis occurs worldwide, but is more common in developed countries. […] Within nations, it is more common in higher socioeconomic groups. […] Males and females are affected in an equal ratio, and the peak age of onset between 10 and 19 years. […] About 80% of people with aphthous stomatitis first developed the condition before the age of 30. […] There have been reports of ethnic variation. For example, in the United States, aphthous stomatitis may be three times more common in white-skinned people than black-skinned people.
  • #7 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #8 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    In North America, recurrent aphthous ulcers are the most common oral mucosal disease. The incidence is approximately 20% overall, rising to more than 50% in certain groups of students in professional schools. Children from higher socioeconomic groups may be affected more than those from lower socioeconomic groups. A 2004 study cited the following point prevalence and lifetime prevalence rates: […] Point prevalence in the pediatric population in the United States: 1.2-1.5% […] Lifetime prevalence in the pediatric population in the United States: 40.18% […] Internationally, recurrent aphthous ulcers have been reported on every populated continent, with frequencies ranging from 2% to 66%. Epidemiologic studies have been conducted in various subpopulations and have provided data on both point prevalence and lifetime prevalence, as follows:
  • #9 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #10 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #11 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #12 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #13 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #14 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #15 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #16 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #17 Overview: Canker sores (mouth ulcers) – InformedHealth.org – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK546250/
    Canker sores are among the most common medical conditions that affect the mucous membranes lining the mouth. Some experts estimate that about 1 out of every 10 people are affected. But its difficult to say exactly how many people keep getting canker sores. […] Most people get them for the first time when they are a teenager or young adult. They are more common in women than in men. […] The minor form is by far the most common, affecting 85% of all people who have canker sores. Only 10% have major canker sores, and 5% have herpetiform canker sores.
  • #18 Pediatric Aphthous Ulcers: Practice Essentials, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/909213-overview
    Although recurrent aphthous ulcers (canker sores) are commonly believed to occur in approximately 20% of the general population, a study of medical and dental students revealed a prevalence of 31-66%. […] The worldwide incidence is similar to that in the United States. Aphthous ulcers (canker sores) are found in all ethnic groups and geographic locations. The prevalence may be increased in affluent countries and socioeconomic classes. […] Race does not appear to influence the frequency or severity of recurrent aphthous ulcers (canker sores). […] Aphthous ulcers (canker sores) may be slightly more common in female individuals than in male individuals. Outbreaks occur most frequently during ovulation or before menstruation, and remissions are common during pregnancy. […] Recurrent aphthous ulcers (canker sores) begin in childhood or adolescence, with peak onset in persons aged 10-19 years. Frequency and severity diminish with age. Major aphthous ulcers (canker sores) may begin soon after puberty. Herpetiform recurrent aphthous ulcers (canker sores) tend to affect older persons.
  • #19 Canker Sores Causes, Symptoms, Diagnosis and Treatment – Cura4U
    https://cura4u.com/conditions/canker-sores
    Canker sores occur more commonly in females than males. […] The risk factors for canker sores include hormonal imbalance (especially during stress or menses), dietary insufficiency, frequent dehydration, smoking, alcohol, and certain food allergies. […] Additionally, patients with weakened immune systems, immunocompromising diseases, or certain genetic disorders risk developing these ulcers.
  • #20 Pediatric Aphthous Ulcers: Practice Essentials, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/909213-overview
    Although recurrent aphthous ulcers (canker sores) are commonly believed to occur in approximately 20% of the general population, a study of medical and dental students revealed a prevalence of 31-66%. […] The worldwide incidence is similar to that in the United States. Aphthous ulcers (canker sores) are found in all ethnic groups and geographic locations. The prevalence may be increased in affluent countries and socioeconomic classes. […] Race does not appear to influence the frequency or severity of recurrent aphthous ulcers (canker sores). […] Aphthous ulcers (canker sores) may be slightly more common in female individuals than in male individuals. Outbreaks occur most frequently during ovulation or before menstruation, and remissions are common during pregnancy. […] Recurrent aphthous ulcers (canker sores) begin in childhood or adolescence, with peak onset in persons aged 10-19 years. Frequency and severity diminish with age. Major aphthous ulcers (canker sores) may begin soon after puberty. Herpetiform recurrent aphthous ulcers (canker sores) tend to affect older persons.
  • #21 Canker Sores: Causes, Symptoms, Treatments, and Remedies
    https://www.webmd.com/oral-health/canker-sores
    About 1 in 5 people get canker sores regularly. Theyre more common in women, possibly because of hormonal differences. They may also run in families. […] Doctors are unsure why people have multiple canker sores at once. Canker sores may run in families and may be triggered by: […] Canker sores may come back frequently. But you can prevent canker sores from happening often if you:
  • #22 Recurrent Aphthous Stomatitis – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK431059/
    Recurrent aphthous stomatitis is a relatively common condition, affecting up to 25% of the worldwide population. […] It usually first appears in childhood or adolescence. […] It may develop as an individual entity or as part of a systemic condition, like Behet disease. […] Out of the 3 subtypes, minor aphthous ulcers are the most prevalent (70% of cases), whereas major (10%) and herpetiform (10%) types are less common.
  • #23 Overview: Canker sores (mouth ulcers) – InformedHealth.org – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK546250/
    Canker sores are among the most common medical conditions that affect the mucous membranes lining the mouth. Some experts estimate that about 1 out of every 10 people are affected. But its difficult to say exactly how many people keep getting canker sores. […] Most people get them for the first time when they are a teenager or young adult. They are more common in women than in men. […] The minor form is by far the most common, affecting 85% of all people who have canker sores. Only 10% have major canker sores, and 5% have herpetiform canker sores.
  • #24 Pediatric Aphthous Ulcers: Practice Essentials, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/909213-overview
    Although recurrent aphthous ulcers (canker sores) are commonly believed to occur in approximately 20% of the general population, a study of medical and dental students revealed a prevalence of 31-66%. […] The worldwide incidence is similar to that in the United States. Aphthous ulcers (canker sores) are found in all ethnic groups and geographic locations. The prevalence may be increased in affluent countries and socioeconomic classes. […] Race does not appear to influence the frequency or severity of recurrent aphthous ulcers (canker sores). […] Aphthous ulcers (canker sores) may be slightly more common in female individuals than in male individuals. Outbreaks occur most frequently during ovulation or before menstruation, and remissions are common during pregnancy. […] Recurrent aphthous ulcers (canker sores) begin in childhood or adolescence, with peak onset in persons aged 10-19 years. Frequency and severity diminish with age. Major aphthous ulcers (canker sores) may begin soon after puberty. Herpetiform recurrent aphthous ulcers (canker sores) tend to affect older persons.
  • #25 Canker Sore
    https://mobile.fpnotebook.com/ENT/Mouth/CnkrSr.htm
    Prevalence: 5-21% in United States. […] Most common ulcerative condition of the oropharynx. […] Family History in 40% of patients. […] Peaks ages 10 to 20 years old. […] Prevalence decreases after age 50 years.
  • #26 Aphthous stomatitis – Wikipedia
    https://en.wikipedia.org/wiki/Aphthous_stomatitis
    Aphthous stomatitis affects between 5% and 66% of people, with about 20% of individuals in most populations having the condition to some degree. […] This makes it the most common disease of the oral mucosa. […] Aphthous stomatitis occurs worldwide, but is more common in developed countries. […] Within nations, it is more common in higher socioeconomic groups. […] Males and females are affected in an equal ratio, and the peak age of onset between 10 and 19 years. […] About 80% of people with aphthous stomatitis first developed the condition before the age of 30. […] There have been reports of ethnic variation. For example, in the United States, aphthous stomatitis may be three times more common in white-skinned people than black-skinned people.
  • #27 Canker Sore
    https://mobile.fpnotebook.com/ENT/Mouth/CnkrSr.htm
    Prevalence: 5-21% in United States. […] Most common ulcerative condition of the oropharynx. […] Family History in 40% of patients. […] Peaks ages 10 to 20 years old. […] Prevalence decreases after age 50 years.
  • #28 Aphthous stomatitis – Wikipedia
    https://en.wikipedia.org/wiki/Aphthous_stomatitis
    Aphthous stomatitis affects between 5% and 66% of people, with about 20% of individuals in most populations having the condition to some degree. […] This makes it the most common disease of the oral mucosa. […] Aphthous stomatitis occurs worldwide, but is more common in developed countries. […] Within nations, it is more common in higher socioeconomic groups. […] Males and females are affected in an equal ratio, and the peak age of onset between 10 and 19 years. […] About 80% of people with aphthous stomatitis first developed the condition before the age of 30. […] There have been reports of ethnic variation. For example, in the United States, aphthous stomatitis may be three times more common in white-skinned people than black-skinned people.
  • #29 Aphthous stomatitis – Wikipedia
    https://en.wikipedia.org/wiki/Aphthous_stomatitis
    Aphthous stomatitis affects between 5% and 66% of people, with about 20% of individuals in most populations having the condition to some degree. […] This makes it the most common disease of the oral mucosa. […] Aphthous stomatitis occurs worldwide, but is more common in developed countries. […] Within nations, it is more common in higher socioeconomic groups. […] Males and females are affected in an equal ratio, and the peak age of onset between 10 and 19 years. […] About 80% of people with aphthous stomatitis first developed the condition before the age of 30. […] There have been reports of ethnic variation. For example, in the United States, aphthous stomatitis may be three times more common in white-skinned people than black-skinned people.
  • #30 Pediatric Aphthous Ulcers: Practice Essentials, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/909213-overview
    Although recurrent aphthous ulcers (canker sores) are commonly believed to occur in approximately 20% of the general population, a study of medical and dental students revealed a prevalence of 31-66%. […] The worldwide incidence is similar to that in the United States. Aphthous ulcers (canker sores) are found in all ethnic groups and geographic locations. The prevalence may be increased in affluent countries and socioeconomic classes. […] Race does not appear to influence the frequency or severity of recurrent aphthous ulcers (canker sores). […] Aphthous ulcers (canker sores) may be slightly more common in female individuals than in male individuals. Outbreaks occur most frequently during ovulation or before menstruation, and remissions are common during pregnancy. […] Recurrent aphthous ulcers (canker sores) begin in childhood or adolescence, with peak onset in persons aged 10-19 years. Frequency and severity diminish with age. Major aphthous ulcers (canker sores) may begin soon after puberty. Herpetiform recurrent aphthous ulcers (canker sores) tend to affect older persons.
  • #31 Canker Sore
    https://mobile.fpnotebook.com/ENT/Mouth/CnkrSr.htm
    Prevalence: 5-21% in United States. […] Most common ulcerative condition of the oropharynx. […] Family History in 40% of patients. […] Peaks ages 10 to 20 years old. […] Prevalence decreases after age 50 years.
  • #32 Canker Sores: Causes, Symptoms, Treatments, and Remedies
    https://www.webmd.com/oral-health/canker-sores
    About 1 in 5 people get canker sores regularly. Theyre more common in women, possibly because of hormonal differences. They may also run in families. […] Doctors are unsure why people have multiple canker sores at once. Canker sores may run in families and may be triggered by: […] Canker sores may come back frequently. But you can prevent canker sores from happening often if you:
  • #33 Canker sores: Causes, remedies, and prevention
    https://www.medicalnewstoday.com/articles/303311
    A report by the United States Surgeon General estimates that up to 25 percent of the general population are affected by recurrent canker sores, noting there may be higher numbers among selected groups, such as health professional students. […] Although there are known risk factors, the causes of canker sores are still not known. […] The causes of recurrent cases of canker sore known as recurrent oral aphthous ulcers or recurrent aphthous stomatitis are also unclear, although there are links with a number of factors including a family history of aphthous ulcers, and allergies.
  • #34 Genome wide analysis for mouth ulcers identifies associations at immune regulatory loci | Nature Communications
    https://www.nature.com/articles/s41467-019-08923-6
    Mouth ulcers are the most common ulcerative condition and encompass several clinical diagnoses, including recurrent aphthous stomatitis (RAS). […] In this genome-wide association study (n=461,106) heritability is estimated at 8.2% (95% CI: 6.4%, 9.9%). […] This study finds 97 variants which alter the odds of developing non-specific mouth ulcers and replicate these in an independent cohort (n=355,744) (lead variant after meta-analysis: rs76830965, near IL12A, OR 0.72 (95% CI: 0.71, 0.73); P=4.4e483). […] The primary genome-wide analysis was undertaken in UK Biobank. At an aggregate, genome-wide level there was evidence for a genetic contribution to mouth ulcers, with heritability estimated at 8.2% (95% CI: 6.4%, 9.9%) under an infinitesimal model implemented in linkage disequilibrium score regression (LDSR).
  • #35 Genome wide analysis for mouth ulcers identifies associations at immune regulatory loci | Nature Communications
    https://www.nature.com/articles/s41467-019-08923-6
    Mouth ulcers are the most common ulcerative condition and encompass several clinical diagnoses, including recurrent aphthous stomatitis (RAS). […] In this genome-wide association study (n=461,106) heritability is estimated at 8.2% (95% CI: 6.4%, 9.9%). […] This study finds 97 variants which alter the odds of developing non-specific mouth ulcers and replicate these in an independent cohort (n=355,744) (lead variant after meta-analysis: rs76830965, near IL12A, OR 0.72 (95% CI: 0.71, 0.73); P=4.4e483). […] The primary genome-wide analysis was undertaken in UK Biobank. At an aggregate, genome-wide level there was evidence for a genetic contribution to mouth ulcers, with heritability estimated at 8.2% (95% CI: 6.4%, 9.9%) under an infinitesimal model implemented in linkage disequilibrium score regression (LDSR).
  • #36 Genome wide analysis for mouth ulcers identifies associations at immune regulatory loci | Nature Communications
    https://www.nature.com/articles/s41467-019-08923-6
    Mouth ulcers are the most common ulcerative condition and encompass several clinical diagnoses, including recurrent aphthous stomatitis (RAS). […] In this genome-wide association study (n=461,106) heritability is estimated at 8.2% (95% CI: 6.4%, 9.9%). […] This study finds 97 variants which alter the odds of developing non-specific mouth ulcers and replicate these in an independent cohort (n=355,744) (lead variant after meta-analysis: rs76830965, near IL12A, OR 0.72 (95% CI: 0.71, 0.73); P=4.4e483). […] The primary genome-wide analysis was undertaken in UK Biobank. At an aggregate, genome-wide level there was evidence for a genetic contribution to mouth ulcers, with heritability estimated at 8.2% (95% CI: 6.4%, 9.9%) under an infinitesimal model implemented in linkage disequilibrium score regression (LDSR).
  • #37 What causes canker sores? – Genes, Stress and Nutrition
    https://www.gbhealthwatch.com/Trait-Canker-Sores.php
    Canker sores, also known as mouth ulcers, are lesions that appear inside of the mouth (on the lips, cheeks, gums or tongue). About 20% of people have experienced canker sores at some point in their lives. The medical term for canker sores is recurrent aphthous stomatitis (RAS). […] People who carry certain variants of genes that are involved in pro-inflammatory responses are more likely to develop canker sores. These genes include interleukins (IL-1, IL-6), tumor necrosis factor- (TNF-), E-selectin and matrix metalloproteinases 9 (MMP-9). The frequency of the risk variants are shown in the Table 1. […] Deficiencies of nutrients such as folate, iron, zinc, or vitamin B12 are often associated with canker sores. Therefore, it is important to make sure you get enough of these nutrients from your diet.
  • #38 Recurrent Aphthous Stomatitis – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK431059/
    Recurrent aphthous stomatitis is a relatively common condition, affecting up to 25% of the worldwide population. […] It usually first appears in childhood or adolescence. […] It may develop as an individual entity or as part of a systemic condition, like Behet disease. […] Out of the 3 subtypes, minor aphthous ulcers are the most prevalent (70% of cases), whereas major (10%) and herpetiform (10%) types are less common.
  • #39 Recurrent Aphthous Stomatitis – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK431059/
    Recurrent aphthous stomatitis is a relatively common condition, affecting up to 25% of the worldwide population. […] It usually first appears in childhood or adolescence. […] It may develop as an individual entity or as part of a systemic condition, like Behet disease. […] Out of the 3 subtypes, minor aphthous ulcers are the most prevalent (70% of cases), whereas major (10%) and herpetiform (10%) types are less common.
  • #40 Overview: Canker sores (mouth ulcers) – InformedHealth.org – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK546250/
    Canker sores are among the most common medical conditions that affect the mucous membranes lining the mouth. Some experts estimate that about 1 out of every 10 people are affected. But its difficult to say exactly how many people keep getting canker sores. […] Most people get them for the first time when they are a teenager or young adult. They are more common in women than in men. […] The minor form is by far the most common, affecting 85% of all people who have canker sores. Only 10% have major canker sores, and 5% have herpetiform canker sores.
  • #41 Mouth Sores FAQs – ENT Health
    https://www.enthealth.org/be_ent_smart/mouth-sores-faqs/
    Canker sores, also called aphthous ulcers, are different than fever blisters and are the most common type of oral ulcer. They are small, shallow ulcers with a red border and white or yellow center that occur on the tongue, soft palate, or inside the lips and cheeks. Canker sores do not occur in the roof of the mouth or the gums. They are quite painful and usually last five to 10 days. […] While canker sores are common and can develop in anyone, they are seen more often in women and young adults or teenagers. The best available evidence suggests that canker sores result from an altered immune response in the area associated with stress, trauma, illness, hormonal changes, nutritional deficiency, or irritation. Acidic foods (e.g., tomatoes, citrus fruits, and some nuts) are known to cause irritation in some patients.
  • #42 You asked, we answered: Why do I keep getting canker sores, and how can I treat them? | Nebraska Medicine Omaha, NE
    https://www.nebraskamed.com/health/head-and-neck/primary-care/you-asked-we-answered-why-do-i-keep-getting-canker-sores-and-how
    Canker sores or recurrent aphthous stomatitis are painful, small, round or oval ulcers that typically develop inside the mouth. Generally, canker sores are shallow with a reddened border and a yellowish or white center, lasting seven to 14 days. […] These sores are the most common form of mouth ulcers approximately 20% of Americans have had a canker sore at least once. Canker sores are more common in adolescents and young adults, in women more than men, and are less common as people age. […] Canker sores are not the same as cold sores, which are caused by a virus and are contagious. Canker sores are quite common and are not contagious.
  • #43 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #44 Recurrent Aphthous Stomatitis – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK431059/
    Recurrent aphthous stomatitis is a relatively common condition, affecting up to 25% of the worldwide population. […] It usually first appears in childhood or adolescence. […] It may develop as an individual entity or as part of a systemic condition, like Behet disease. […] Out of the 3 subtypes, minor aphthous ulcers are the most prevalent (70% of cases), whereas major (10%) and herpetiform (10%) types are less common.
  • #45 Overview: Canker sores (mouth ulcers) – InformedHealth.org – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK546250/
    Canker sores are among the most common medical conditions that affect the mucous membranes lining the mouth. Some experts estimate that about 1 out of every 10 people are affected. But its difficult to say exactly how many people keep getting canker sores. […] Most people get them for the first time when they are a teenager or young adult. They are more common in women than in men. […] The minor form is by far the most common, affecting 85% of all people who have canker sores. Only 10% have major canker sores, and 5% have herpetiform canker sores.
  • #46 Complications and Extraintestinal Manifestations
    https://crohnsandcolitis.ca/About-Crohn-s-Colitis/IBD-Journey/Complications-and-Extraintestinal-Manifestations/Mouth-Sores
    Sometimes you might have oral canker sores, also called apthous ulcers, inside your mouth on the inner lining of your cheeks or lips. Mouth sores are small, shallow, round- to oval-shaped, and painful. Occasional canker sores are normal. They generally heal in about two weeks, but can last as long as six weeks. They are more common in Crohns disease (10% of patients have these) than ulcerative colitis (4%). […] The causes of mouth sores in IBD are not clear. They do tend to occur during times of IBD inflammation (active disease) and increased stress. They could also be related to deficiencies, such as low B12, iron, folate and zinc levels in the blood. Certain food products, like spices, could also cause these ulcers.
  • #47 Mouth sores and ulcers (canker sores) | healthdirect
    https://www.healthdirect.gov.au/mouth-sores-and-ulcers
    Mouth ulcers are also known as aphthous ulcers or canker sores. They are a type of sore that occurs on the inside of your mouth. […] About 1 in 5 people have recurrent (repeated) mouth ulcers. […] No one knows the exact cause of mouth ulcers, but there are several factors that can make you more likely to develop them. […] About 1 in 3 people who get mouth ulcers have family members who also get them. […] Most mouth ulcers will heal by themselves within 1 or 2 weeks. If your mouth ulcers last longer than this or they keep coming back, see your doctor, as this may be a sign of a more serious problem. […] Most of the time, mouth ulcers heal on their own without treatment in about a week. […] Here are some ways to reduce your chance of getting mouth ulcers: maintain a healthy diet, avoid toothpaste with sodium lauryl sulphate, reduce stress, avoid foods that trigger ulcers, if you or your child wears dental braces, make sure they fit well. […] Most mouth ulcers heal without scarring. Bigger ulcers can leave scars.
  • #48 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #49 Recurrent Aphthous Stomatitis – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK431059/
    Recurrent aphthous stomatitis is a relatively common condition, affecting up to 25% of the worldwide population. […] It usually first appears in childhood or adolescence. […] It may develop as an individual entity or as part of a systemic condition, like Behet disease. […] Out of the 3 subtypes, minor aphthous ulcers are the most prevalent (70% of cases), whereas major (10%) and herpetiform (10%) types are less common.
  • #50 Overview: Canker sores (mouth ulcers) – InformedHealth.org – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK546250/
    Canker sores are among the most common medical conditions that affect the mucous membranes lining the mouth. Some experts estimate that about 1 out of every 10 people are affected. But its difficult to say exactly how many people keep getting canker sores. […] Most people get them for the first time when they are a teenager or young adult. They are more common in women than in men. […] The minor form is by far the most common, affecting 85% of all people who have canker sores. Only 10% have major canker sores, and 5% have herpetiform canker sores.
  • #51 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Herpetiform recurrent aphthous ulcer typically occurs first in the second decade of life; in the majority of cases, onset comes before age 30 years. The frequency and the severity of episodes may increase during the third and fourth decades and then decrease with advancing age. […] In children and in some adult communities who are affected, the incidence of recurrent aphthous ulcer is higher in women and girls than in men or boys.
  • #52 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Herpetiform recurrent aphthous ulcer typically occurs first in the second decade of life; in the majority of cases, onset comes before age 30 years. The frequency and the severity of episodes may increase during the third and fourth decades and then decrease with advancing age. […] In children and in some adult communities who are affected, the incidence of recurrent aphthous ulcer is higher in women and girls than in men or boys.
  • #53 Canker sores: An old enemy facing new treatment | Perio Implant Advisory
    https://www.perioimplantadvisory.com/clinical-tips/article/16412249/canker-sores-an-old-enemy-facing-new-treatment
    Aphthous ulcers, also known as canker sores, present as single or multiple ulcerations in the oral mucosa. The first onset of these benign lesions usually occurs in childhood or early adulthood. Canker sores affect women more than men, are self-limiting, and are disproportionately painful relative to the size of the lesion. […] Diagnosis is based on clinical presentation along with medical history information. Once an aphthous ulcer is identified, it is important for the dentist to thoroughly review the patients medical history for possible systemic disease. Associated disorders include gastrointestinal disorders, such as celiac disease and inflammatory bowel disease; hematologic disorders, such as anemia; nutritional deficiency; and immunologic disorders, such as Behhet’s syndrome or HIV/AIDS. […] Important note: If the lesion does not resolve in two weeks, further screening such as blood tests may be warranted to rule out these systemic disorders.
  • #54 Mouth Ulcers: Types, Causes & Treatment
    https://my.clevelandclinic.org/health/diseases/21766-mouth-ulcer
    Canker sores are the most common type of mouth ulcers. Healthcare providers aren’t exactly sure what causes them or why some people get them more than others do. Causes include minor trauma (like biting your cheek), acidic foods and even stress. […] Canker sores affect about 20% of the general population. Many people use the terms mouth ulcer and canker sore interchangeably. […] Canker sores aren’t contagious, but cold sores are.
  • #55 You asked, we answered: Why do I keep getting canker sores, and how can I treat them? | Nebraska Medicine Omaha, NE
    https://www.nebraskamed.com/health/head-and-neck/primary-care/you-asked-we-answered-why-do-i-keep-getting-canker-sores-and-how
    Canker sores or recurrent aphthous stomatitis are painful, small, round or oval ulcers that typically develop inside the mouth. Generally, canker sores are shallow with a reddened border and a yellowish or white center, lasting seven to 14 days. […] These sores are the most common form of mouth ulcers approximately 20% of Americans have had a canker sore at least once. Canker sores are more common in adolescents and young adults, in women more than men, and are less common as people age. […] Canker sores are not the same as cold sores, which are caused by a virus and are contagious. Canker sores are quite common and are not contagious.
  • #56 Canker sores: An old enemy facing new treatment | Perio Implant Advisory
    https://www.perioimplantadvisory.com/clinical-tips/article/16412249/canker-sores-an-old-enemy-facing-new-treatment
    Aphthous ulcers, also known as canker sores, present as single or multiple ulcerations in the oral mucosa. The first onset of these benign lesions usually occurs in childhood or early adulthood. Canker sores affect women more than men, are self-limiting, and are disproportionately painful relative to the size of the lesion. […] Diagnosis is based on clinical presentation along with medical history information. Once an aphthous ulcer is identified, it is important for the dentist to thoroughly review the patients medical history for possible systemic disease. Associated disorders include gastrointestinal disorders, such as celiac disease and inflammatory bowel disease; hematologic disorders, such as anemia; nutritional deficiency; and immunologic disorders, such as Behhet’s syndrome or HIV/AIDS. […] Important note: If the lesion does not resolve in two weeks, further screening such as blood tests may be warranted to rule out these systemic disorders.
  • #57 Mouth Ulcers – What Is A Canker Sore, Causes And Treatment – Clínica Pardiñas
    https://www.clinicapardinas.com/en/mouth-ulcers-canker-sores
    Canker sores are one of the most widespread oral health problems. […] The sores could be the symptom of a systemic illness such as a bacterial, viral or fungal infection or as a result of irritation caused by braces, dentures or the sharp edge of a broken tooth or filling. […] It is a frequent side effect that occurs in patients under cancer treatment. […] The exact cause is unknown, although it is thought to be multifactorial, such as predisposing genetic factors, alterations in the bodys defenses, or related to systemic diseases (such as Crohns syndrome, celiac disease, etc.). […] The most common is the Herpes virus (HSV-1), which produces ulcers on the mucosa or lips, colloquially known as cold sores, and which are highly contagious. […] Depending on their origin, the treatment may be different. […] In general, the treatment of canker sores is usually symptomatic, applying protective gels, rinses with chlorhexidine or topical anesthetics, and most disappear on their own after a few days. […] It is important to ask your dentist and examine any mouth ulcer that lasts 14 days or longer.
  • #58 Canker Sores (Aphthous Stomatitis) | Boston Children’s Hospital
    https://www.childrenshospital.org/conditions/canker-sores-aphthous-stomatitis
    Canker sores are usually seen in children and adolescents from the ages of 10 to 19 years. For about one-third of the children affected, lesions continue to reappear for years after the initial outbreak. […] If your child has canker sores, it’s important to know that they aren’t contagious and can’t be spread from one child to another. […] If you child sees a physician for her canker sores, doctors usually diagnose them based on a complete history and physical examination of your child. The lesions are unique and usually your child’s physician can make a simple physical diagnosis. In addition, you child’s physician may order the following tests to help confirm the diagnosis and rule out other causes for the ulcers: Blood tests, Cultures of the lesions, Biopsy of the lesion: taking a small piece of tissue from the lesion and examining it microscopically.
  • #59 Canker sores: An old enemy facing new treatment | Perio Implant Advisory
    https://www.perioimplantadvisory.com/clinical-tips/article/16412249/canker-sores-an-old-enemy-facing-new-treatment
    Aphthous ulcers, also known as canker sores, present as single or multiple ulcerations in the oral mucosa. The first onset of these benign lesions usually occurs in childhood or early adulthood. Canker sores affect women more than men, are self-limiting, and are disproportionately painful relative to the size of the lesion. […] Diagnosis is based on clinical presentation along with medical history information. Once an aphthous ulcer is identified, it is important for the dentist to thoroughly review the patients medical history for possible systemic disease. Associated disorders include gastrointestinal disorders, such as celiac disease and inflammatory bowel disease; hematologic disorders, such as anemia; nutritional deficiency; and immunologic disorders, such as Behhet’s syndrome or HIV/AIDS. […] Important note: If the lesion does not resolve in two weeks, further screening such as blood tests may be warranted to rule out these systemic disorders.
  • #60
    https://www.prevention.com/health/health-conditions/a61678150/canker-sores-symptoms-treatment/
    Canker sores are open sores in the mouth, says Howard Sobel, M.D., clinical dermatologic surgeon at Lenox Hill Hospital in New York. They typically appear white or yellow in color and are surrounded by a bright red area, he adds. They commonly pop up on the inside of the lip or cheeks. […] Canker sores have a litany of causes including trauma, hormonal changes, stress, and food allergies, explains Hannah Kopelman, D.O., a dermatologist at Kopelman Aesthetic Surgery. They can also be signs of a vitamin deficiency particularly that of B12, zinc, folate, and iron, she adds. […] Persistent canker sores can be associated with several medical conditions like celiac disease, inflammatory bowel diseases like Crohns disease and ulcerative colitis, Behcets disease, and autoimmune disorders such as lupus, Dr. Kopelman says, which is why its important to see a doctor if they linger.
  • #61 Complications and Extraintestinal Manifestations
    https://crohnsandcolitis.ca/About-Crohn-s-Colitis/IBD-Journey/Complications-and-Extraintestinal-Manifestations/Mouth-Sores
    Sometimes you might have oral canker sores, also called apthous ulcers, inside your mouth on the inner lining of your cheeks or lips. Mouth sores are small, shallow, round- to oval-shaped, and painful. Occasional canker sores are normal. They generally heal in about two weeks, but can last as long as six weeks. They are more common in Crohns disease (10% of patients have these) than ulcerative colitis (4%). […] The causes of mouth sores in IBD are not clear. They do tend to occur during times of IBD inflammation (active disease) and increased stress. They could also be related to deficiencies, such as low B12, iron, folate and zinc levels in the blood. Certain food products, like spices, could also cause these ulcers.
  • #62 Canker Sores (Aphthous Ulcers) in Children | University Hospitals
    https://www.uhhospitals.org/health-information/health-and-wellness-library/article/diseases-and-conditions—pediatrics/canker-sores-aphthous-ulcers-in-children
    Canker sores are often first seen in children and teens between ages 10 and 19. For about 3 in 10 children affected, canker sores come back for years after the first outbreak. They cant be spread from one child to another. […] Canker sores that keep coming back may be linked to celiac disease, inflammatory bowel disease, or HIV infection. […] Experts don’t know the exact cause. But they may be linked to things such as food allergies, stress, poor nutrition, or certain medicines.
  • #63 Recurrent Aphthous Stomatitis – StatPearls – NCBI Bookshelf
    https://www.ncbi.nlm.nih.gov/books/NBK431059/
    Recurrent aphthous stomatitis is a relatively common condition, affecting up to 25% of the worldwide population. […] It usually first appears in childhood or adolescence. […] It may develop as an individual entity or as part of a systemic condition, like Behet disease. […] Out of the 3 subtypes, minor aphthous ulcers are the most prevalent (70% of cases), whereas major (10%) and herpetiform (10%) types are less common.
  • #64 Canker Sore – Aphthous Stomatitis/Aphthous Ulcer | Iowa Head and Neck Protocols
    https://medicine.uiowa.edu/iowaprotocols/canker-sore-aphthous-stomatitisaphthous-ulcer
    Canker sores are widespread, affecting approximately 25% of the population (Ship, 1972). […] The etiology of recurrent aphthous stomatitis is not perfectly understood. In susceptible individuals, the development of aphthous ulcers is related to the body’s lymphocytic response which is mediated by TNF-alpha (Taylor et al.). […] Aphthous ulcers are associated with conditions such as Behcet disease, cyclic neutropenia, MAGIC syndrome, PFAPA syndrome, and HIV. […] Epidemiologic aspects of recurrent aphthous ulcerations. Oral Surgery, Oral Medicine, Oral Pathology, 33, 400-406.
  • #65 Canker Sore – Aphthous Stomatitis/Aphthous Ulcer | Iowa Head and Neck Protocols
    https://medicine.uiowa.edu/iowaprotocols/canker-sore-aphthous-stomatitisaphthous-ulcer
    Canker sores are widespread, affecting approximately 25% of the population (Ship, 1972). […] The etiology of recurrent aphthous stomatitis is not perfectly understood. In susceptible individuals, the development of aphthous ulcers is related to the body’s lymphocytic response which is mediated by TNF-alpha (Taylor et al.). […] Aphthous ulcers are associated with conditions such as Behcet disease, cyclic neutropenia, MAGIC syndrome, PFAPA syndrome, and HIV. […] Epidemiologic aspects of recurrent aphthous ulcerations. Oral Surgery, Oral Medicine, Oral Pathology, 33, 400-406.
  • #66 Canker Sore – Aphthous Stomatitis/Aphthous Ulcer | Iowa Head and Neck Protocols
    https://medicine.uiowa.edu/iowaprotocols/canker-sore-aphthous-stomatitisaphthous-ulcer
    Canker sores are widespread, affecting approximately 25% of the population (Ship, 1972). […] The etiology of recurrent aphthous stomatitis is not perfectly understood. In susceptible individuals, the development of aphthous ulcers is related to the body’s lymphocytic response which is mediated by TNF-alpha (Taylor et al.). […] Aphthous ulcers are associated with conditions such as Behcet disease, cyclic neutropenia, MAGIC syndrome, PFAPA syndrome, and HIV. […] Epidemiologic aspects of recurrent aphthous ulcerations. Oral Surgery, Oral Medicine, Oral Pathology, 33, 400-406.
  • #67 Canker Sores (Aphthous Ulcers) in Children | University Hospitals
    https://www.uhhospitals.org/health-information/health-and-wellness-library/article/diseases-and-conditions—pediatrics/canker-sores-aphthous-ulcers-in-children
    Canker sores are often first seen in children and teens between ages 10 and 19. For about 3 in 10 children affected, canker sores come back for years after the first outbreak. They cant be spread from one child to another. […] Canker sores that keep coming back may be linked to celiac disease, inflammatory bowel disease, or HIV infection. […] Experts don’t know the exact cause. But they may be linked to things such as food allergies, stress, poor nutrition, or certain medicines.
  • #68 Complementary and Integrative Approach to Treating Canker Sores
    https://www.rupahealth.com/post/complementary-and-integrative-approach-to-treating-canker-sores
    Canker sores, medically known as aphthous ulcers or aphthous stomatitis, are a common oral health concern that affects approximately 20% of the general population. […] Anyone can develop canker sores, but they’re most common in people assigned female at birth during adolescence and early adulthood (second and third decades of life). […] There is likely also a genetic component that predisposes certain individuals to developing canker sores. […] A large, nationwide population-based cohort study sought to estimate the risk of developing autoimmune disease in patients diagnosed with RAS. They concluded that patients with RAS had an increased risk of developing Behcet’s disease, systemic lupus erythematosus (SLE), ankylosing spondylitis, Hashimoto’s thyroiditis, Graves’ disease, and rheumatoid arthritis (RA). […] Changes in the oral microbiota have been associated with an increased occurrence of oral ulcers. […] Canker sores can be a persistent and painful oral health issue for some individuals.
  • #69 Canker Sore Symptoms, Causes and Natural Remedies – Dr. Axe
    https://draxe.com/health/canker-sore/
    Canker sores can also run in families possibly due to heredity or to a shared environmental factor like foods or allergens! […] Unfortunately, anyone at any age can develop a canker sore. […] The exact cause of canker sores is still unknown, but its believed that several factors can trigger the occurrence of a canker sore, including: […] Canker sores can also occur when you have certain conditions or diseases, including: […] A study conducted in Norway linked sodium lauryl sulfate to canker sore incidences. It found that the denaturing effect of sodium lauryl sulfate on the oral mucin layer, with exposure of the underlying epithelium, induces an increased incidence of recurrent canker sores.
  • #70 Aphthous Ulcers: Causes, Types, and Treatments
    https://ostrowonline.usc.edu/aphthous-ulcers-causes-types-treatments/
    Aphthous ulcers (oral aphthous), commonly known as canker sores, present a prevalent oral concern affecting 20-25% of the population. […] According to retrospective population-based studies in different countries and regions, the prevalence can range from 1.4% to 21.4%. (Liu et al., 2022). […] Recurrent aphthous stomatitis is a chronic inflammatory disease of the oral mucosa. It is characterized by painful mouth ulcers that an underlying disease cannot explain (Sanchez, et al., 2020) and may be present first in childhood or adolescence and affect up to 25% of the general population and 3-month recurrence rates are as high as 50%, and are more common in females ulcers can appear alone or secondary to distinct disease processes. (Gasmi et al., 2021). […] Stressful life events are significantly associated with the onset of recurrent aphthous stomatitis (RAS) episodes, nearly tripling the odds of occurrence, highlighting the profound impact of psychosocial factors (psychological and social factors) or social determinants that affect health.
  • #71 What causes canker sores? – Genes, Stress and Nutrition
    https://www.gbhealthwatch.com/Trait-Canker-Sores.php
    Canker sores, also known as mouth ulcers, are lesions that appear inside of the mouth (on the lips, cheeks, gums or tongue). About 20% of people have experienced canker sores at some point in their lives. The medical term for canker sores is recurrent aphthous stomatitis (RAS). […] People who carry certain variants of genes that are involved in pro-inflammatory responses are more likely to develop canker sores. These genes include interleukins (IL-1, IL-6), tumor necrosis factor- (TNF-), E-selectin and matrix metalloproteinases 9 (MMP-9). The frequency of the risk variants are shown in the Table 1. […] Deficiencies of nutrients such as folate, iron, zinc, or vitamin B12 are often associated with canker sores. Therefore, it is important to make sure you get enough of these nutrients from your diet.
  • #72
    https://www.prevention.com/health/health-conditions/a61678150/canker-sores-symptoms-treatment/
    Canker sores are open sores in the mouth, says Howard Sobel, M.D., clinical dermatologic surgeon at Lenox Hill Hospital in New York. They typically appear white or yellow in color and are surrounded by a bright red area, he adds. They commonly pop up on the inside of the lip or cheeks. […] Canker sores have a litany of causes including trauma, hormonal changes, stress, and food allergies, explains Hannah Kopelman, D.O., a dermatologist at Kopelman Aesthetic Surgery. They can also be signs of a vitamin deficiency particularly that of B12, zinc, folate, and iron, she adds. […] Persistent canker sores can be associated with several medical conditions like celiac disease, inflammatory bowel diseases like Crohns disease and ulcerative colitis, Behcets disease, and autoimmune disorders such as lupus, Dr. Kopelman says, which is why its important to see a doctor if they linger.
  • #73 Mouth Sores FAQs – ENT Health
    https://www.enthealth.org/be_ent_smart/mouth-sores-faqs/
    Canker sores, also called aphthous ulcers, are different than fever blisters and are the most common type of oral ulcer. They are small, shallow ulcers with a red border and white or yellow center that occur on the tongue, soft palate, or inside the lips and cheeks. Canker sores do not occur in the roof of the mouth or the gums. They are quite painful and usually last five to 10 days. […] While canker sores are common and can develop in anyone, they are seen more often in women and young adults or teenagers. The best available evidence suggests that canker sores result from an altered immune response in the area associated with stress, trauma, illness, hormonal changes, nutritional deficiency, or irritation. Acidic foods (e.g., tomatoes, citrus fruits, and some nuts) are known to cause irritation in some patients.
  • #74 Mouth Ulcers: Types, Causes & Treatment
    https://my.clevelandclinic.org/health/diseases/21766-mouth-ulcer
    Canker sores are the most common type of mouth ulcers. Healthcare providers aren’t exactly sure what causes them or why some people get them more than others do. Causes include minor trauma (like biting your cheek), acidic foods and even stress. […] Canker sores affect about 20% of the general population. Many people use the terms mouth ulcer and canker sore interchangeably. […] Canker sores aren’t contagious, but cold sores are.
  • #75 A Guide to Treating and Avoiding Canker Sores | TIME
    https://time.com/7261601/canker-sores-how-to-treat-prevent/
    Most times, we dont know why they come, says Dr. Alessandro Villa, chief of oral medicine and oral oncology at Miami Cancer Institute at Baptist Health South Florida. Humans have figured out the forces behind planetary motion and the Irish potato famine, yet most canker sores remain something of a mystery, even while affecting 25% of people worldwide. […] Minor canker sores should go away in a few days to a couple of weeks. Kids and young adults are most likely to develop them, especially when theyre under stress. This makes sense, Villa says, because canker sores seem related to immune system activity, and stress activates the immune system. […] A surprising factor in some cases is toothpaste. A foaming agent called sodium lauryl sulfate is a common ingredient that can disrupt the cheeks protective barrier in people susceptible to mouth ulcers, some research shows.
  • #76 Canker Sore Symptoms, Causes and Natural Remedies – Dr. Axe
    https://draxe.com/health/canker-sore/
    Canker sores can also run in families possibly due to heredity or to a shared environmental factor like foods or allergens! […] Unfortunately, anyone at any age can develop a canker sore. […] The exact cause of canker sores is still unknown, but its believed that several factors can trigger the occurrence of a canker sore, including: […] Canker sores can also occur when you have certain conditions or diseases, including: […] A study conducted in Norway linked sodium lauryl sulfate to canker sore incidences. It found that the denaturing effect of sodium lauryl sulfate on the oral mucin layer, with exposure of the underlying epithelium, induces an increased incidence of recurrent canker sores.
  • #77 Complementary and Integrative Approach to Treating Canker Sores
    https://www.rupahealth.com/post/complementary-and-integrative-approach-to-treating-canker-sores
    Canker sores, medically known as aphthous ulcers or aphthous stomatitis, are a common oral health concern that affects approximately 20% of the general population. […] Anyone can develop canker sores, but they’re most common in people assigned female at birth during adolescence and early adulthood (second and third decades of life). […] There is likely also a genetic component that predisposes certain individuals to developing canker sores. […] A large, nationwide population-based cohort study sought to estimate the risk of developing autoimmune disease in patients diagnosed with RAS. They concluded that patients with RAS had an increased risk of developing Behcet’s disease, systemic lupus erythematosus (SLE), ankylosing spondylitis, Hashimoto’s thyroiditis, Graves’ disease, and rheumatoid arthritis (RA). […] Changes in the oral microbiota have been associated with an increased occurrence of oral ulcers. […] Canker sores can be a persistent and painful oral health issue for some individuals.
  • #78 Aphthous Ulcers: Causes, Types, and Treatments
    https://ostrowonline.usc.edu/aphthous-ulcers-causes-types-treatments/
    Within underserved populations contending with socioeconomic hardships such as poverty, food insecurity, and strenuous working conditions, RAS prevalence might be markedly higher. […] For dentists serving in underserved communities, recognizing these social determinants of health becomes pivotal, urging a tailored, multicultural approach in health education to address the dynamic health concerns among diverse populations and the burden of RAS.
  • #79 Mouth ulcer – Wikipedia
    https://en.wikipedia.org/wiki/Mouth_ulcer
    Oral ulceration is a common reason for people to seek medical or dental advice. A breach of the oral mucosa probably affects most people at various times during life. […] For a discussion of the epidemiology of aphthous stomatitis, see the epidemiology of aphthous stomatitis.
  • #80 Not all canker sores are really canker sores | Office for Science and Society – McGill University
    https://www.mcgill.ca/oss/article/did-you-know-health/not-all-canker-sores-are-really-canker-sores
    Canker sores are a common symptom of many diseases, such as celiac disease, ulcerative colitis, and HIV/AIDS. […] Medication for canker sores and mouth ulcers does exist, but it is largely to lower inflammation or reduce pain, not to cure the sore itself.
  • #81 Aphthous Ulcers: Causes, Types, and Treatments
    https://ostrowonline.usc.edu/aphthous-ulcers-causes-types-treatments/
    Aphthous ulcers (oral aphthous), commonly known as canker sores, present a prevalent oral concern affecting 20-25% of the population. […] According to retrospective population-based studies in different countries and regions, the prevalence can range from 1.4% to 21.4%. (Liu et al., 2022). […] Recurrent aphthous stomatitis is a chronic inflammatory disease of the oral mucosa. It is characterized by painful mouth ulcers that an underlying disease cannot explain (Sanchez, et al., 2020) and may be present first in childhood or adolescence and affect up to 25% of the general population and 3-month recurrence rates are as high as 50%, and are more common in females ulcers can appear alone or secondary to distinct disease processes. (Gasmi et al., 2021). […] Stressful life events are significantly associated with the onset of recurrent aphthous stomatitis (RAS) episodes, nearly tripling the odds of occurrence, highlighting the profound impact of psychosocial factors (psychological and social factors) or social determinants that affect health.
  • #82 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    In North America, recurrent aphthous ulcers are the most common oral mucosal disease. The incidence is approximately 20% overall, rising to more than 50% in certain groups of students in professional schools. Children from higher socioeconomic groups may be affected more than those from lower socioeconomic groups. A 2004 study cited the following point prevalence and lifetime prevalence rates: […] Point prevalence in the pediatric population in the United States: 1.2-1.5% […] Lifetime prevalence in the pediatric population in the United States: 40.18% […] Internationally, recurrent aphthous ulcers have been reported on every populated continent, with frequencies ranging from 2% to 66%. Epidemiologic studies have been conducted in various subpopulations and have provided data on both point prevalence and lifetime prevalence, as follows:
  • #83 Aphthous Stomatitis: Background, Pathophysiology, Etiology
    https://emedicine.medscape.com/article/1075570-overview
    Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% […] Europe lifetime prevalence: 36-37% […] Sweden point prevalence: 0.5-2% […] Turkey point prevalence: 1.2-2.3% […] Jordan lifetime prevalence: 78% […] Iran lifetime prevalence: 25.2% […] Sulaimani City, Iraq lifetime prevalence: 28.2% […] India point prevalence: 1.5% in Northern India […] India lifetime prevalence: 50.3% […] Recurrent aphthous ulcer minor is the most common form of childhood recurrent aphthous ulcer. Approximately 1% of American children may have recurrent aphthous ulcers, with onset before age 5 years. The percentage of patients who are affected decreases after the third decade. […] Recurrent aphthous ulcer major has a typical onset after puberty and can persist for the remainder of an individual’s life, although after late adulthood episodes become much less common.
  • #84 Complementary and Integrative Approach to Treating Canker Sores
    https://www.rupahealth.com/post/complementary-and-integrative-approach-to-treating-canker-sores
    Canker sores, medically known as aphthous ulcers or aphthous stomatitis, are a common oral health concern that affects approximately 20% of the general population. […] Anyone can develop canker sores, but they’re most common in people assigned female at birth during adolescence and early adulthood (second and third decades of life). […] There is likely also a genetic component that predisposes certain individuals to developing canker sores. […] A large, nationwide population-based cohort study sought to estimate the risk of developing autoimmune disease in patients diagnosed with RAS. They concluded that patients with RAS had an increased risk of developing Behcet’s disease, systemic lupus erythematosus (SLE), ankylosing spondylitis, Hashimoto’s thyroiditis, Graves’ disease, and rheumatoid arthritis (RA). […] Changes in the oral microbiota have been associated with an increased occurrence of oral ulcers. […] Canker sores can be a persistent and painful oral health issue for some individuals.
  • #85 Canker sores: Causes, remedies, and prevention
    https://www.medicalnewstoday.com/articles/303311
    A report by the United States Surgeon General estimates that up to 25 percent of the general population are affected by recurrent canker sores, noting there may be higher numbers among selected groups, such as health professional students. […] Although there are known risk factors, the causes of canker sores are still not known. […] The causes of recurrent cases of canker sore known as recurrent oral aphthous ulcers or recurrent aphthous stomatitis are also unclear, although there are links with a number of factors including a family history of aphthous ulcers, and allergies.
  • #86 Dealing with pesky canker sores – Smiles By Shields Dentistry
    https://www.smilesbyshields.com/dealing-with-pesky-canker-sores/
    Aphthous ulcers are one of the most common complaints of the mouth and are most common in younger adults and in women. Between 20% and 30% of the population suffers from recurrent episodes of canker sores. […] While recurrent canker sores nearly 30% of the population, the US Surgeon General notes that rates are higher among specific groups, including health professional students. The link to health professional students indicates there may be causation or correlation linked to other common pathogens or viruses.
  • #87 Canker Sores (Aphthous Stomatitis) | Boston Children’s Hospital
    https://www.childrenshospital.org/conditions/canker-sores-aphthous-stomatitis
    Canker sores are usually seen in children and adolescents from the ages of 10 to 19 years. For about one-third of the children affected, lesions continue to reappear for years after the initial outbreak. […] If your child has canker sores, it’s important to know that they aren’t contagious and can’t be spread from one child to another. […] If you child sees a physician for her canker sores, doctors usually diagnose them based on a complete history and physical examination of your child. The lesions are unique and usually your child’s physician can make a simple physical diagnosis. In addition, you child’s physician may order the following tests to help confirm the diagnosis and rule out other causes for the ulcers: Blood tests, Cultures of the lesions, Biopsy of the lesion: taking a small piece of tissue from the lesion and examining it microscopically.
  • #88 Canker Sores (Aphthous Ulcers) in Children | University Hospitals
    https://www.uhhospitals.org/health-information/health-and-wellness-library/article/diseases-and-conditions—pediatrics/canker-sores-aphthous-ulcers-in-children
    Canker sores are often first seen in children and teens between ages 10 and 19. For about 3 in 10 children affected, canker sores come back for years after the first outbreak. They cant be spread from one child to another. […] Canker sores that keep coming back may be linked to celiac disease, inflammatory bowel disease, or HIV infection. […] Experts don’t know the exact cause. But they may be linked to things such as food allergies, stress, poor nutrition, or certain medicines.
  • #89 Mouth sores and ulcers (canker sores) | healthdirect
    https://www.healthdirect.gov.au/mouth-sores-and-ulcers
    Mouth ulcers are also known as aphthous ulcers or canker sores. They are a type of sore that occurs on the inside of your mouth. […] About 1 in 5 people have recurrent (repeated) mouth ulcers. […] No one knows the exact cause of mouth ulcers, but there are several factors that can make you more likely to develop them. […] About 1 in 3 people who get mouth ulcers have family members who also get them. […] Most mouth ulcers will heal by themselves within 1 or 2 weeks. If your mouth ulcers last longer than this or they keep coming back, see your doctor, as this may be a sign of a more serious problem. […] Most of the time, mouth ulcers heal on their own without treatment in about a week. […] Here are some ways to reduce your chance of getting mouth ulcers: maintain a healthy diet, avoid toothpaste with sodium lauryl sulphate, reduce stress, avoid foods that trigger ulcers, if you or your child wears dental braces, make sure they fit well. […] Most mouth ulcers heal without scarring. Bigger ulcers can leave scars.
  • #90 Canker Sores
    https://www.aaom.com/index.php%3Foption=com_content&view=article&id=82:canker-sores&catid=22:patient-condition-information&Itemid=120
    Canker sores (recurrent aphthous stomatitis, RAS) are among the most common of oral conditions and are experienced by more than half of the population. […] The cause of canker sores is not known. However, in some instances, they can be a sign of other conditions affecting the body (such as a gastrointestinal disease). […] Canker sores can also be associated with some systemic conditions such a Crohns disease and nutritional deficiencies. […] If you experience more than three canker sore outbreaks per month, if you are never without an ulcer, or if you have any symptoms listed in this sheet or feel that there could be other factors connected to your canker sores.
  • #91 Aphthous Ulcers: Causes, Types, and Treatments
    https://ostrowonline.usc.edu/aphthous-ulcers-causes-types-treatments/
    Within underserved populations contending with socioeconomic hardships such as poverty, food insecurity, and strenuous working conditions, RAS prevalence might be markedly higher. […] For dentists serving in underserved communities, recognizing these social determinants of health becomes pivotal, urging a tailored, multicultural approach in health education to address the dynamic health concerns among diverse populations and the burden of RAS.

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