Cancer in any form is deadly and skin cancer is no different. Occurring in the tissues of the skin that is exposed to sunlight such as the neck, face, arms and hands, skin cancer mostly affects those that have a weak immune system or those people whose body parts are highly exposed to the sun. If the skin cancer is left unchecked and untreated, it can spread to other body parts as well. As with any other form of cancer, skin cancer too is painless and different types of skin cancers may have a different look. Some forms of skin cancer start as a red or pink lump, while others may appear as a lump with hard and crusty skin. Other symptoms to look out for skin cancer include a mole, spot or lump getting bigger than 7 mm, becoming inflamed, becoming painful and itchy, is bleeding or is crusty, changes shape and color and which does not heal even after a month.