Caught early, it has a 90 percent cure rate. Knowing what to look for and when to see a dermatologist is as easy as knowing your ABC D s. A stands for asymmetry. Benign or harmless moles or spots are round and symmetrical in shape, one side a mirror image of the other. Suspicious moles look distorted.
B stands for border.
A doctor should evaluate moles with jagged, irregular or scalloped edges. C means color. Usually moles are a uniform shade of brown. Mixed colors including red, black, brown or blue could signal a problem. D stands for diameter.