He read they could be precancerous. The head and neck are the main areas for skin cancers, then the hands and forearms. On women, the upper chest and the lower leg are frequent sites. Malignant melanoma is the most dangerous form of skin cancer. On men this type of cancer is normally found on the upper back.
Fair skin is a risk factor, although by no means is skin cancer limited to people with fair skin.
The greater the tendency to freckle, the greater the risk, generally speaking. And while most of us have moles, few new ones appear in adulthood. Very few cancerous spots will exhibit symptoms such as bleeding or pain. It can be hard to tell whether a spot is cancerous, and that's why we do a lot of biopsies, removing the spot and having it checked by a pathologist. It's a very simple procedure it takes just a few minutes with anesthesia, like getting a tooth filled.