Moles are normal and everyone has them; the vast majority are completely harmless. Monitoring your moles and knowing the warning signs matters a great deal, however, because detecting any change early is the key to prevention and successful treatment.
Signs that need attention — the ABCDE rule
Dermatologists use a simple rule to monitor moles. Watch for these letters:
- A — Asymmetry: one half of the mole does not match the other.
- B — Border: irregular, ragged or blurred edges.
- C — Colour: several colours or uneven colour within the same mole.
- D — Diameter: larger than about 6 millimetres.
- E — Evolving: any change in size, shape or colour over time, or bleeding and itching.
When should you see a dermatologist?
If you notice any of the signs above, a new mole appearing after a certain age, or a mole that hurts or bleeds, consult a consultant dermatologist. The examination is simple and quick — it either reassures you or catches something early, and that is what matters most.
Routine screening
If you have many moles or a family history of skin cancer, regular screening with your dermatologist provides consistent monitoring. Protecting your skin from the sun also reduces the risk.