Melanoma can appear suddenly—as a new mole—or it can grow slowly, in or near an existing mole.
In men, melanomas are often found between the shoulders and hips, or the head and neck area.
In women, melanoma often develops on the lower legs as well as between the shoulders and hips.
However, melanoma can appear anywhere on the skin.
Get to know the pattern of moles, spots, freckles, and other marks on your skin so you can notice any changes. The best way to find changes in these moles and markings is by doing regular skin self-examinations.
It is important to find melanoma as early as possible. The American Cancer Society recommends a skin examination during a routine cancer-related check-up in all adults age 20 years and older.
During this skin cancer check-up or "screening," your doctor will probably discuss your medical history and inspect your skin from head to toe—even areas that don't get any sun. Your doctor will record the location, size, and color of any moles. If a mole looks unusual, he or she may arrange for a biopsy.