Acquired hypertrichosis lanuginosa as a presenting sign of metastatic prostate cancer with rapid resolution after treatment.

Background: Acquired hypertrichosis lanuginosa (AHL) is a rare cutaneous disorder that involves spontaneous growth of lanugo-type hair in association with overt or occult malignant neoplasms. Bronchopulmonary and gastrointestinal malignancies are most commonly associated.

Case Presentation: We report the occurrence of AHL associated with metastatic prostate cancer and its abrupt resolution after bilateral orchiectomy.