A skin self-exam is used to identify suspicious growths that may be
cancer or growths that may develop into skin cancer (precancers). Adults should
examine their skin once every month. Look for any abnormal skin growth or any
change in the color, shape, size, or appearance of a skin growth. Check for any
area of injured skin (lesion) that does not heal.
Incidence and mortality
There are three main types of skin cancer:
Basal cell carcinoma (BCC).
Squamous cell carcinoma (SCC) (together with BCC referred to as nonmelanoma skin cancer [NMSC]).
BCC and SCC are the most common forms of skin cancer but have substantially better prognoses than the less common, generally more aggressive, melanoma.
NMSC is the most commonly occurring cancer in the United States. Its incidence appears to be increasing in...