An open sore that bleeds, crusts and won't go away. A scaly red patch with jagged borders that may crust or bleed A crater-like growth that may bleed and grow rapidly. The ABCD rule for recognizing melanomas The American Academy of Dermatology in conjunction with the American Cancer Society created the ABCD rule for identifying melanomas. Moles that meet any of the following descriptions should be brought to the attention of a dermatologist. A symmetry-The appearance of one side of a mole doesn't match the other side.
Normal moles tend to be symmetrical.
The edge of a mole is jagged, rather than smooth. C olor-A mole exhibits a mixture of colors including red, white, blue, brown and black. Normal moles are usually only one color. Inc. All Rights Reserved.