From what we observe now, in the early stages of illness, melanomas are typically found on the extremities such as hands, feet, the underside of feet, under fingernails, and particularly on the big toe. Initially, they might appear simply as a black spot or a lesion. About two to three years later, there might be swelling at the site of the lesion or black spot. Then, within another five to six months, it may ulcerate, indicating that the condition has worsened.