Dermatology Nursing. 2007;19(1):83-84. Athletes may develop sports-related subungual hematomas. Repeated trauma to the nail bed occurs each time the toe contacts the inside of the sneaker.

"Subungual melanomas arise from normal cells deep in the skin responsible for making pigment in our body called melanocytes. They are the same cells that give rise to typical UV-related melanoma.

the cells that give your skin its pigmentation or color. When melanoma begins in or around the fingernail or toenail, it’s called subungual melanoma, or nail melanoma for short. Nail melanoma is ...