 [ Symptoms ] i have a spot on my face can it be dangerous [ Disease ] no worriesonly suspect something wrong if you found the abcde mole rule u ll need to investigate at that time ￼ a = asymmetry one half is unlike the other half ￼ b = border an irregular scalloped or poorly defined border ￼ c = color is varied from one area to another has shades of tan brown or black or is sometimes white red or blue ￼ d = diameter melanomas are usually greater than 6mm the size of a pencil eraser when diagnosed but they can be smaller e = evolving a mole or skin lesion that looks different from the rest or is changing in size shape or color