A woman in her 70s presented with a worsening alopecia and multiple erythematous plaques involving the scalp, the frontal area and the eyebrows (Fig. 1A and B). Pruritus was a significant feature. A careful dermatological examination of the whole body, palpation of the lymph nodes and laboratory investigation were unremarkable. In her past medical history, there was a HCV-chronic hepatitis. A 5 mm skin biopsy was taken from one lesion on the scalp.
