Skin cancers are the most common cancer type in the world, with more than 2 million cases diagnosed in the United States each year. Most people get skin cancer from too much sun (or tanning beds).
Fortunately, when most skin cancers, such as basal cell cancers, are caught early, they can be cured. Even potentially more serious types, such as squamous cell cancer and melanoma, have high cure rates when detected at an early stage.
Any new, growing or changing skin growths or moles, especially those that bleed, itch or cause pain, should be checked out by a doctor.
Source: Prepared by the Editors of The Johns Hopkins Medical Letter: Health After 50