Nonmelanoma skin cancer is usually
caused by overexposure to the sun and its
ultraviolet (UV) rays. Overexposure to UV rays can
Having severe sunburn and blistering, especially during
Spending a lot of time in the sun over many years.
Using tanning beds or sunlamps, which are artificial sources of
Other possible causes of skin cancer include repeated
X-rays, certain chemicals (such as arsenic, coal tar,
creosote), and radioactive substances (such as radium). Skincancer may also be
caused by ionizing radiation treatments for skin conditions such as
Incidence and mortality
There are three main types of skin cancer:
Basal cell carcinoma.
Squamous cell carcinoma (together with basal cell carcinoma referred to as nonmelanoma skin cancer).
Basal cell carcinoma and squamous cell carcinoma are the most common forms of skin cancer but have substantially better prognoses than the less common, generally more aggressive melanoma.
Nonmelanoma skin cancer is the most commonly occurring cancer in the United...