Folliculotropic Mycosis Fungoides Masquerading as Alopecia Areata

A 27-year-old male presented with a 2-year history of progressive patchy alopecia on the left side of the pubis and upper thigh, initially without signs of inflammation. This case was diagnosed as folliculotropic mycosis fungoides, a rare and aggressive variant of cutaneous T-cell lymphoma, which can mimic alopecia areata. The diagnosis was confirmed through histopathologic and immunohistochemical findings. This case highlighted the importance of considering folliculotropic mycosis fungoides in the differential diagnosis of alopecia areata, especially in atypical presentations.