Subungual melanoma A cancer of skin under nail:Introduction,Causes,Signs and Symptoms, diagnosis, Prevention :Subungual melanoma is a serious type of skin cancer that occurs in the skin under your nails. Subungual melanomas are rare, seen in only 0.07% to 3.5% of the people in the world who have melanoma. But these melanomas can spread to other parts of your body and cause death.Subungual melanoma presents as brown-black discolorations of the nail bed. It can present as either a streak of pigment or irregular pigmentation. The discoloration can progress to thickening, splitting, or destruction of the nail with pain and inflammation. Subungual