ABCD - Easy guide to checking a mole (moles)

Last reviewed 09/2021

ABCD-Easy guide to checking your moles

  • the following ABCD-Easy are outlined by the British Association of Dermatologists (BAD)(1) as rules that may indicate to a patient changes suggestive of a 'melanoma'

Asymmetry - the two halves of the area may differ in shape

Border - the edges of the area may be irregular or blurred, and sometimes show notches

Colour - this may be uneven. Different shades of black, brown and pink may be seen

Diameter - most melanomas are at least 6mm in diameter.

BAD suggests that patients should report any change in size, shape or diameter to their doctor