• Nonmelanoma skin cancer is almost always cured when it is found early and treated. So it is important to see your doctor if you think you may have it.
• Show your doctor any skin growths that change in color, shape, or size. Skin cancer usually starts as a growth, a sore that does not heal, or a change in a wart or mole.
• Your doctor will use a biopsy to find out if you have skin cancer. This means taking a sample of the growth and sending it to a lab to see if it contains cancer cells.
• Your doctor will want to remove all of the cancer. There are several ways to do this. The most common way is to numb your skin so that it does not hurt, then cut out the cancer. You will be awake while this is done.
• After you have had skin cancer, you are more likely to get it again. Check your skin often, and see your doctor regularly for checkups.
• Skin cancer is usually caused by too much time in the sun. You can prevent it by being careful. Stay out of the sun at midday, when the sun’s rays are strongest. Wear sunscreen or other sun protection. Do not use tanning booths or sunlamps.

Is this topic for you?

This topic is about nonmelanoma skin cancer, including basal cell cancer and squamous cell cancer. For information about melanoma skin cancer, see the topic Skin Cancer, Melanoma.

What is nonmelanoma skin cancer?

Skin cancer is the abnormal growth of cells in the skin. It is the most common type of cancer. It is almost always cured when it is found early and treated. So it is important to see your doctor if you have changes in your skin.

Most skin cancers are the nonmelanoma type. There are two main types of nonmelanoma skin cancer:

• Basal cell carcinoma . Most nonmelanoma cancers are this type. It can damage deeper tissues, such as muscles and bones. It almost never spreads to other parts of the body.
• Squamous cell carcinoma . This type is less common. It often starts in skin that has been injured or diseased. It sometimes spreads to other parts of the body.

What causes it?

Nonmelanoma skin cancer is usually caused by too much sun. Using tanning beds or sunlamps too much can also cause it.

How is nonmelanoma skin cancer diagnosed?

Skin cancer usually appears as a growth that changes in color, shape, or size. This can be a sore that does not heal or a change in a wart or a mole. These changes usually happen in areas that get the most sun-your head, neck, back, chest, or shoulders. The most common place for skin cancer is your nose.