Skin cancer is a type of cancer that affects the skin cells. This type of cancer can spread throughout the body and eventually affect the major organs in the body. It can be caught ahead of time if you have skin abnormalities that just pop up or have changed over time. Abnormalities such as moles, fleshy bumps, or other spots on the body should not be ignored. If you have a spot on your body that has changed in size, color, shape, or appearance in any way at all, you need to have it inspected by a dermatologist.