Melanomas can vary greatly in the way they look. The first sign of melanoma is the appearance of a new spot on the skin or a change in an existing spot.

Warning signs of melanoma

Most melanomas develop as a new spot on the skin or in a long-standing mole that changes. It is important to get to know your skin well so that you can recognise any changes.

Look for…

• Increase in size
• Change in colour
• Change in shape/irregular border
• Itch or bleeding
• Recent appearance

Increase in size

A mole may expand sideways or become raised. This may be the first sign of a highly dangerous form of melanoma

Change in colour

Watch for moles that change colour. Melanomas often develop a blue or black colour. Sometimes many different colours such as red, pink, purple or grey may develop and some areas may become lighter.

Change in shape/irregular border

Change in shape is usually from an oval or round mole to an irregular (coastline) shape. Most harmless moles have smooth regular borders. Melanomas often have irregular borders.

Itch or bleeding

Recurring itch may be an important warning sign, but only if there are other changes noticeable in the mole. (Many skin conditions which are not serious are also itchy). If a mole bleeds repeatedly for no apparent reason, you should have it examined by your doctor as soon as possible.

Recent appearance

If a mole or freckle has appeared recently on normal looking skin, especially if its colour is uneven or it is growing rapidly, you should show it to your doctor.