Subungual pigmented lesion caused by a bone spur: a mimic of a subungual melanoma

Subungual pigmented lesions may be difficult to diagnose. A wide range of diseases present as pigmented lesions. The most concerning is subungual melanoma. A case is presented of a bone spur causing a subungual lesion mimicking melanoma. If subungual lesions do not show signs of resolution, timely biopsy is indicated.