One half unlike the other half.

Irregular, scalloped or poorly defined border.

Varied from one area to
another; shades of tan and brown, black; sometimes
white, red or blue

While melanomas are
usually greater than
6mm (the size of a pencil eraser) when diagnosed, they can be smaller

A mole or skin lesion that looks different from the rest
or is changing in size, shape or color.