Dermatophytosis Incognito Mimicking Cutaneous T-Cell Lymphoma.

Dermatophytosis incognito can be missed in diagnosis, given its relatively low prevalence as compared with common cases of dermatophytosis and therefore, is likely under-reported. Cutaneous T-cell lymphoma (CTCL) is also a rare entity with variable clinical manifestations. While successful treatment of dermatophytosis is feasible withmultiple topical and systemic antifungal options, CTCL can present a therapeutic challenge associated with significant emotional distress for the patients. We present a case of tinea incognito initially treated for eczema, later considered biopsy-supported CTCL that was successfully treated with antifungal therapy.