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 #Oral #mouth #SkinRash #dermatology #Differential #Diagnosis #Algorithm #causes
