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Mouth ulcers - Overview

Alternative Names

Oral ulcer; Stomatitis - ulcerative; Ulcer - mouth

Definition of Mouth ulcers:

Mouth ulcers are sores or open lesions within the mouth, caused by various disorders. (See also mouth sores or canker sores)

Causes, incidence, and risk factors:

Mouth ulcers are caused by many disorders. These include:

The skin lesion of histoplasmosis may also appear as a mouth ulcer.

Canker sores are more common in young adults than in children or older adults.

  • Reviewed last on: 1/18/2007
  • Benjamin W. Van Voorhees, MD, MPH, Assistant Professor of Medicine and Pediatrics, The University of Chicago, Chicago, IL. Review provided by VeriMed Healthcare Network.