Aphthous Stomatitis

What is Aphthous stomatitis?

Aphthous stomatitis is a condition characterized by recurrent round ulcers on nonkeratinized oral mucosa. It affects about 20% of individuals and peaks in adolescence. This range of presentations is often called aphthous disease, which includes minor, major, and herpetiform subtypes of aphthous ulcers. Each aphthous stomatitis ulcer commonly heals within 7 to 14 days unless complications arise. The aphthous pathogenesis is likely multifactorial and involves immune dysregulation, including T-cell–mediated inflammation.

What causes Aphthous stomatitis?

A dysfunctional mucosal barrier and immune dysregulation likely contribute to aphthous stomatitis, producing localized cytotoxicity after minor trauma or antigen exposure. Genetic predisposition, stress, smoking cessation, and deficiencies of vitamin B12, folate, and iron increase risk. Understanding the reason that aphthous ulcers develop requires the evaluation of immune dysregulation, mucosal trauma, and microbial shifts that lower the threshold for ulceration. Behçet disease, inflammatory bowel disease, and HIV can mimic or worsen the condition through systemic inflammation.

What are the signs and symptoms of Aphthous stomatitis?

Minor ulcers are shallow and usually fewer than five per episode. They heal without scarring within two weeks. Major ulcers exceed 1 cm, persist for weeks, and often leave fibrotic scars. Herpetiform ulcers form clusters of pinpoint lesions that coalesce and cause severe oral pain. The constant pain restricts eating when aphthous ulcers involve the buccal mucosa. Individuals often report prodromal burning that precedes the lesion.

How is Aphthous stomatitis diagnosed?

Diagnosis relies on a history of recurrent, solitary or multiple ulcers, with predictable healing and no vesicles. In severe, atypical, or adult-onset cases, clinicians exclude other causes through targeted tests for celiac disease, inflammatory bowel disease, HIV, and nutritional deficiencies. Biopsy is seldom required but may help when ulcers persist beyond 2-3 weeks or show atypical features.

How is Aphthous stomatitis treated?

Initial therapy targets pain and inflammation with high-potency topical corticosteroids applied in adhesive gels. Antimicrobial rinses, such as chlorhexidine, reduce secondary infection and may decrease ulcer severity/duration. Refractory cases may need systemic agents like colchicine, dapsone, or thalidomide, after evaluating risks. Addressing deficiencies and controlling Behçet or inflammatory bowel disease often reduces frequency.

What are the most important facts to know about Aphthous stomatitis?

• Aphthous stomatitis is characterized by recurrent round ulcers on nonkeratinized mucosa and affects about 20% of individuals, especially young adults.
• The cause of aphthous ulcers focuses on immune dysregulation triggered by trauma, stress, or nutrient deficiency.
• Aphthous ulcers appear as minor, major, or herpetiform lesions with prodromal burning and pain that disrupts eating.
• The diagnosis is clinical; labs are sometimes included for celiac disease, inflammatory bowel disease, HIV, and micronutrients, with biopsy rarely needed.
• Topical corticosteroids, antimicrobial rinses, trigger avoidance, and systemic colchicine or dapsone for refractory cases form the treatment core.