Skin cancer -- abnormal cell changes in the outer layer of skin -- is by far the most common cancer in the world.

Most skin cancers are caused by exposure to ultraviolet (UV) light.

When it comes to your health and skin cancer, it's a good idea to be proactive and keep an eye out for dangerous moles.

If you're in a high-risk group for skin cancer or have been treated for a form of it, familiarize yourself with how it looks.

There are three major types of skin cancers: basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and melanoma.

Melanoma is a type of skin cancer. When it spreads to other places in your body, it's called metastatic, or advanced.

Nodular melanoma is a type of skin cancer. It’s a dangerous form of melanoma that grows quickly.

If you have fair skin or you’ve spent lots of time in the sun, it’s a good idea to get regular skin cancer screenings.

With melanoma, treatment options depend on where the cancer is, how thick it is, how far it’s spread, and other things.

Dual immunotherapy Opdualag uses nivolumab and relatlimab to reactivate T cells, helping treat advanced melanoma effectively.

Doctors have a lot of tools to treat melanoma. Often, the first step is to remove the tumor from your skin, usually with surgery. 

Basal cell carcinoma is a cancer that grows on parts of your skin that get a lot of sun.

Squamous cell carcinoma (SCC) is the second most common form of skin cancer.

You have a number of treatment options to choose from, depending on what type of skin cancer it is.

Treatment for non-melanoma cancers may include radiation or chemotherapy, but surgery is used most often.