Bandlike melasma mimicking linear morphea ("en coup de sabre" type).

A case of bandlike melasma on the median line of the forehead of a middle-aged woman is described. It was an atypical case for its clinical shape and distribution. At initial examination, it was diagnosed as linear morphea. Epidermal nevus was another differential diagnosis. Based on the presence of minor protuberance and the absence of atrophy, clinically, and the presence of sebaceous glands and the absence of swelling of collagen fibers, documented histologically, we revised our diagnosis to that of an atypical type of melasma.