Mycosis fungoides with tinea pseudoimbricata owing to Trichophyton rubrum infection.

BACKGROUND

Dermatophytes can mimic or possibly trigger mycosis fungoides (MF).

OBJECTIVES

To present the case of a 55-year-old male referred for MF refractory to therapy who instead had extensive tinea pseduoimbricata (concentric, annular lesions secondary to Trichophyton rubrum).

METHODS

Case report with biopsy and cultures.

RESULTS

Oral antifungal therapy dramatically improved his lesions, and only a few MF lesions persisted after treatment.

CONCLUSIONS

Concurrent tinea may confound the treatment and diagnosis of MF.