Folliculotropic mycosis fungoides of the scalp: A case report

Folliculotropic Mycosis Fungoides (FMF) is a rare but distinct variant of mycosis fungoides, characterized by predominant follicular involvement and a typically more aggressive course. We report the case of a 65-year-old woman with a four-year history of scarring alopecia of the scalp associated with intense pruritus. Clinical and dermoscopic findings raised suspicion of a lymphoproliferative disorder. Histopathologic examination and immunohistochemistry confirmed the diagnosis of FMF (CD3+, CD4+, CD5+, CD7?, CD30?). FMF can mimic various dermatoses, leading to diagnostic delays. Management relies primarily on PUVA phototherapy, combined with systemic treatments. Early diagnosis is crucial due to the potentially aggressive behavior of this subtype.