Skin Cancer is the most common form of human cancer. The most common warning sign of skin cancer is a change in the appearance of the skin, such as a new growth or a sore that will not heal. There are three different terms that are used to describe skin cancer. One is basal cell carcinomas; it usually appears as the classic "sore that doesn't heal." A bleeding or scabbing sore that seems to get somewhat better, then recurs and starts to bleed, may be a basal cell carcinoma. Most basal cell carcinomas are on the face and neck where the skin is exposed to sunlight. However, a fair number show up on parts of the body such as the stomach, legs, and head exposed to little or no sunlight. It appears on the outer layer of the skin. Another form is squamous cell carcinomais it is cancer that begins in squamous cells, thin, flat cells that look like fish scales under the microscope. Squamous cells are found in the tissue that forms the surface of the skin, the lining of hollow organs of the body, and the passages of the respiratory and digestive tracts. Squamous cell carcinomas may arise in any of these tissues. The last form is melanoma, one of the most common skin cancers. It looks like scabbed moles and sores. On men it is seen on their upper body on women it shown in their legs. Skin Cancer can be and is caused by the sun’s Ultraviolet rays and tanning booths or beds.