Mouth ulcers

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Oral thrush


Canker sore (aphthous ulcer)


Lichen planus on the oral mucosa


Mouth sores

Overview	Symptoms	Treatment	Prevention

Mouth ulcers

Definition

Mouth ulcers are sores or open lesions within the mouth caused by various disorders. (See alsomouth sores or aphthous ulcer.)

Alternative Names

Oral ulcer; Stomatitis - ulcerative; Ulcer - mouth

Causes

Mouth ulcers are caused by many disorders. These include canker sores, leukoplakia, gingivostomatitis, oral cancer, oral lichen planus, oral thrush, herpes simplex, and other disorders. The skin lesion of histoplasmosis may also appear as a mouth ulcer.

Aphthous ulcer is more common in young adults than in children or older adults.

Review Date: 5/4/2003
Reviewed By: Bridget Martell, M.D., Department of Internal Medicine, Albert Einstein College of Medicine, New York, NY. Review provided by VeriMed Healthcare Network.

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