Overexposure to the sun's ultraviolet rays (UV rays) is what causes the skin cancer and can be prevented by simply applying the correct amount of sunscreen when you know you will be around sun exposure. Just as dangerous as the sun are UV rays from artificial sources like tanning beds or sunlamps.
The three main types of skin cancer are basal cell cancer,
squamous cell cancer,
. In the Skin Cancer Section of this website, we talk a bit about the ABCDE system as a guide to detect signs of skin cancer in moles or growths on the skin.
People with skin types that burn easily and do not tan are at highest risk for skin cancers and also, anyone who has had severe sunburns or many sunburns is at high risk for skin cancers.Sun Damage
The sunlight that reaches the earth has ultraviolet A and ultraviolet B (UVA and UVB) rays. These sun UV rays are the main cause of damage to the skin . UVA and UVB rays affect the skin's sensitivity to sun exposure in different ways.