General practice·General practice
Mole changing shape
Informed by recognized medical guidance
Overview
A mole that is changing shape means its size, color, or outline is different from before. Most moles are harmless, but a change can sometimes be a sign of skin cancer, so it is important to get it checked.
Key facts
- Most moles are benign (not cancer) and many people have them.
- A changing mole is one of the early warning signs for melanoma, a type of skin cancer.
- The earlier a concerning mole is found and treated, the better the outcome.
Moles that change shape are fairly common, but only a small number of these changes turn out to be skin cancer. It is always wise to see a doctor to be sure.
Anyone can have a mole that changes shape, but people with fair skin, many moles, or a family history of skin cancer are at higher risk. It can occur at any age, though the risk increases with age and sun exposure.