Skin Lesion ABCDE Checker

A

Asymmetry

If you folded the mole in half, do the two halves match?

Both halves are roughly the same shape (symmetrical) The two halves look different (asymmetrical)

B

Border

What do the edges of the lesion look like?

Smooth, even, well-defined border Irregular, ragged, notched, or blurred edges

C

Color

How many colors are present in the lesion?

Single, uniform color (tan or light brown) Two shades of brown or tan Multiple colors: shades of brown, black, red, white, or blue

D

Diameter

How large is the lesion?

Smaller than 6mm (about the size of a pencil eraser) 6mm or larger

E

Evolution

Has the lesion changed over time?

No change noticed — looks the same as always Slight change, unsure Has changed in size, shape, color, or started bleeding/itching

ABCDE Skin Checker