Basal Cell - most common, less dangerous although the cancer continues to grow, causing disfigurement. Most commonly found on face and neck. Can look red, scabby, like a sore that doesn’t heal

Squamous Cell - second most common form, must be removed because lesions continue to grow and damage the surrounding tissue. They may grow quickly and look like a wart, scaly, open sore, crusted skin. Appears on sun exposed areas head, neck, arm, back of hand and leg

Melanoma - less common, very dangerous if left untreated. It invades other skin, reaches the bloodstream or lymph system and spreads to other parts of the body.