Oral Skin Ulcers - Differential Diagnosis Algorithm

Single Ulcer:

 • Traumatic ulcer

 • Angular ulcer

 • Aphthous ulcer

 • Herpes simplex

Multiple Acute Ulcers:

 • Viral stomatitis

 • Erythema multiforme

 • Acute necrotizing ulcerative gingivitis

Multiple Recurrent Ulcers:

 • Aphthous stomatitis

 • Herpes simplex infection

Multiple Chronic Ulcers:

 • Pemphigus vulgaris

 • Lichen planus

 • Lupus erythematosus

 • Bullous pemphigoid



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