Medicine in pictures: Discoid eczema

Skin disease can occur suddenly with secondary bacterial infection.

An outbreak of discoid eczema often occurs suddenly and in the absence of other skin disease.

Multiple lesions on the back.

Discoid eczema, also known as nummular eczema or nummular dermatitis, is a condition characterised by the acute eruption of small, very itchy papulovesicles that quickly coalesce into large, well-demarcated, erythematous, exudative plaques.

Sometimes the lesions appear pustular in areas, simulating impetigo. Secondary bacterial