Dermatosis Papulosa nigra in a white female and her family members

A 22-year-old white female presented with multiple asymptomatic brownish flat papules on her face and upper neck. The lesions appeared when she was 18 and gradually increased in size and number until now. She had a positive family history of similar lesions in her 25-year-old and 30-year-old sisters, 64-year-old father and 78-year-old grand mother who developed their lesions around puberty. The lesions were histologically consistent with dermatosis papulosa nigra. She was treated with light curettage on one side and cauterization on the other side of the face. The results with both methods were excellent.