This fungal infection was misdiagnosed as psoriasis. Group I topical steroids were prescribed. The inflammation became confluent and spread over much of the lower leg.

A diagnosis of eczema of the dorsum of the foot was made and treated with a group IV topical steroid. The misdiagnosed fungal infection spread in a ringworm-like pattern.

Initial plaque appeared eczematous; treated with topical steroids. Acute inflammation occurred when steroids stopped. Potassium hydroxide examination of border scale showed fungal hyphae.