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HandWiki. Recurrent Aphthous Stomatitis. Encyclopedia. Available online: https://encyclopedia.pub/entry/30092 (accessed on 25 September 2026).
HandWiki. Recurrent Aphthous Stomatitis. Encyclopedia. Available at: https://encyclopedia.pub/entry/30092. Accessed September 25, 2026.
HandWiki. "Recurrent Aphthous Stomatitis" Encyclopedia, https://encyclopedia.pub/entry/30092 (accessed September 25, 2026).
HandWiki. (2022, October 19). Recurrent Aphthous Stomatitis. In Encyclopedia. https://encyclopedia.pub/entry/30092
HandWiki. "Recurrent Aphthous Stomatitis." Encyclopedia. Web. 19 October, 2022.
Recurrent Aphthous Stomatitis
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The content is sourced from: https://handwiki.org/wiki/Biology:Recurrent_aphthous_stomatitis

Aphthous stomatitis, or recurrent aphthous stomatitis (RAS), is a common condition characterized by the repeated formation of benign and non-contagious mouth ulcers (aphthae) in otherwise healthy individuals. The informal term canker sore is also used, mainly in North America, although it may also refer to other types of mouth ulcers. The cause is not completely understood but involves a T cell-mediated immune response triggered by a variety of factors which may include nutritional deficiencies, local trauma, stress, hormonal influences, allergies, genetic predisposition, certain foods, dehydration, or some food additives. These ulcers occur periodically and heal completely between attacks. In the majority of cases, the individual ulcers last about 7–10 days, and ulceration episodes occur 3–6 times per year. Most appear on the non-keratinizing epithelial surfaces in the mouth – i.e. anywhere except the attached gingiva, the hard palate and the dorsum of the tongue – although the more severe forms, which are less common, may also involve keratinizing epithelial surfaces. Symptoms range from a minor nuisance to interfering with eating and drinking. The severe forms may be debilitating, even causing weight loss due to malnutrition. The condition is very common, affecting about 20% of the general population to some degree. The onset is often during childhood or adolescence, and the condition usually lasts for several years before gradually disappearing. There is no cure, and treatments such as corticosteroids aim to manage pain, reduce healing time and reduce the frequency of episodes of ulceration.

aphthous stomatitis mouth ulcers malnutrition

References

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