16/09/2026
The ABCDE rule has probably saved more lives than any other piece of public advice about skin. Keep using it.
Just know what it can miss. Nodular melanoma often breaks every letter: small, evenly shaped, a single colour, and fast. For those, the better checklist is EFG. Elevated, firm, growing. And alongside both rules,
the oldest signal there is: the spot that doesn’t match its neighbours.
None of this is meant to make you anxious. It’s meant to make you accurate. Rules are how you notice. A
skin check is how you know.
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Send this to someone who checks their moles in the mirror once a year.