Skin cancer is the type of cancer that builds in tissues of the skin. This cancer develops because of the molecules found in cell (DNA) that holds the genetic information becomes damaged and the immune system of body fails to repair them.
These damaged cells starts growing and divide into more cells without reaching the maturity level. When these cells increases and multiply, tumor is formed. Skin cancer is detectable in early stages if it develops in the outer layer of skin called epidermis. In outer layer, skin cancer is viewable usually clearly. Older people are facing more skin cancer on the exposed parts of body to sun or the persons having destabilized immune system.