Diagnosis: Bullous pemphigoid
Description: Tense blister arising on inflammed skin
Morphology: Blisters
Site: Arm,upper
Sex: M
Age: 78
Type: Clinical
Submitted By: Ted Rosen
Differential DiagnosisHistory: Acute onset burning/stinging erythematous plaques, followed by appearance of bullae within plaques. Responded well to rituximab.