Skin cancer, the uncontrolled growth of skin cells, is one of the most commonly diagnosed forms of cancer. Several different types of skin cancer exist.

Basal cell carcinoma is the most common type of skin cancer. It is a slow growing cancer that normally appears in patients aged 40 or over. Basal cells are normal skin cells that can develop into cancerous cells. Basal cell skin cancer usually occurs on areas of the body or scalp that are regularly exposed to the sun. People with light skin, hair, and eye color are at greater risk of developing basal cell skin cancer, as are those who have been overexposed to x-rays.

Although this type of skin cancer can spread to nearby tissues, basal cell carcinoma does not normally spread to distant parts of the body. A skin lesion that has a pearl-like or waxy appearance and is flat or slightly raised could indicate a basal skin cancer. The lesion could be white or light pink, flesh-colored, or brown, and may contain blood vessels that are visible either in the lesion or nearby skin.

Another warning sign is a sore that won’t heal or a lesion that looks like a scar, but is not related to a skin injury. It is important to see your doctor about any suspicious skin lesion. The border, color, size, and lack of symmetry sometimes indicate a cancerous growth.

Squamous cell carcinoma occurs in the middle layer of the epidermis, or skin. It is more likely to spread to another area of the body and is more aggressive than basal cell carcinoma. It often begins after age 50 and can occur in normal skin or in a burned or injured area.

Melanoma is not as common, but more deadly than other skin cancer forms. Four types of melanoma exist, and they vary according to the location on the body where they are likely to occur, the age group they affect, and the groups of people most likely affected. Depending on the type of melanoma, surgical removal of the skin cancer is normally required. More serious forms may require radiation treatments or chemotherapy.

The best ways to prevent skin cancer include avoiding the sun’s strongest rays, basically from 10 a.m. to 4 p.m. You should also use a sunscreen daily that has a sun protection factor (SPF) of 15 or higher. Other preventative methods include wearing sunglasses and wide-brimmed hats. Children should be protected with sunscreen and kept out of the midday sun as well. Spending time outdoors, but in the shade, also reduces your skin cancer susceptibility.