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Uncommon causes

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

It should be noted that many of these causes are listed for completeness, and that it may be very rare to see mouth ulcers that are a result of these conditions.

  • gastrointestinal disease:
    • Crohn's disease
    • ulcerative colitis
    • coeliac disease

  • rheumatological disease:
    • Reiter's disease
    • Behcet's syndrome

  • infection:
    • viral:
      • herpes simplex
      • herpes zoster
    • bacterial
    • syphilitic
      • tuberculous

  • erythema multiforme

  • self-inflicted

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