A is for ASYMMETRY: One half of a mole or birthmark does not match the other.
B is for BORDER: The edges are irregular, ragged, notched or blurred.
C is for COLOR: The color is not the same all over and may include shades of brown or black, sometimes with patches of red, white or blue.
D is for DIAMETER: The spot is larger than 6 millimeters across (about ¼ inch – the size of a pencil eraser) or is growing larger.
Mole images courtesy of the National Cancer Institute.
UT Health Science Center
© 2002 - 2015 UTHSCSA
Links provided from UTHSCSA pages to other websites do not constitute or imply an endorsement of those sites, their content, or products and services associated with those sites.