Solitary patch with peripheral scaling
A. Chicken pox G. Pemphigus vulgaris
B. Bullous pemphigoid H. Erythema marginatum
C. Pilyriasisvesicolor I . Henoch-Schoinleinpurpura
D. Pilyriasisnodosum K. Measles
E. Steven Johnson syndrome
1. Herald patch: Solitary patch with peripheral scaling, most commonly found on the trunk.
2. Target lesions: Concentric rings due to a cell medicated cutaneous lymphocytotoxic
3. Thick walled bullae. Immunofluorescences studies show linear staining of IgG along the basement membrane.