Dermatophytids are fungus-free disseminated skin lesions resulting from induced sensitization in patients with ringworm infections.

The most common dermatophytid is an inflammation in the hands resulting from a fungus infection of the feet. Dermatophytids normally disappear when the primary ringworm infection is treated.

Dermatophytids may resemble erythema nodosum

Erythema nodosum

Erythema nodosum is an inflammation of the fat cells under the skin characterized by tender red nodules or lumps that are usually seen on both shins...

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