What is the definition of skin cancer?

Skin cancer is the development of abnormal cells in the skin. It is the most common form of cancer in the United States, with over 9,500 cases diagnosed each year. There are three main types of skin cancer: basal cell carcinoma, squamous cell carcinoma, and melanoma.

* Basal cell carcinoma is the most common type of skin cancer. It is usually found on sun-exposed areas of the skin, such as the face, neck, arms, and legs. Basal cell carcinoma typically appears as a small, pearly, or waxy bump. It is usually slow-growing and does not spread to other parts of the body.

* Squamous cell carcinoma is the second most common type of skin cancer. It is also usually found on sun-exposed areas of the skin. Squamous cell carcinoma typically appears as a red, scaly patch of skin that may bleed or crust over. It is more aggressive than basal cell carcinoma and can spread to other parts of the body.

* Melanoma is the most serious type of skin cancer. It can occur anywhere on the body, but it is most commonly found on the back, chest, and legs. Melanoma typically appears as a dark-brown or black patch of skin that may be irregular in shape and have a jagged border. It can grow quickly and spread to other parts of the body.

Skin cancer is caused by a combination of factors, including exposure to ultraviolet (UV) radiation from the sun or tanning beds, a family history of skin cancer, and a fair complexion.

Skin cancer can be treated with a variety of methods, including surgery, radiation therapy, chemotherapy, and immunotherapy. The type of treatment that is best for a particular patient will depend on the stage of the cancer, the location of the cancer, and the patient's overall health.

Skin cancer is a serious disease, but it is also one that can be prevented and cured. By protecting your skin from the sun and getting regular skin cancer screenings, you can help reduce your risk of developing this disease.