Skin cancer

Detecting skin cancer

Asymmetry - the two halves of a melanoma may not look the same

Keep an eye on your skin

You may have some moles or dark patches on your skin that are flat or slightly raised. Usually these will remain harmless all your life.

But moles or patches of normal skin that change in size, shape or colour over weeks or months in adult life should be shown to your doctor.

Border - edges of a melanoma may be irregular, blurred or jagged

What should I be looking out for?

Get to know your skin and look out for any changes. When checking your skin use the ABCD rule to help you remember the main warning signs for malignant melanoma.

Also remember to look out for other changes that might indicate less serious non-melanoma skin cancer.

Colour - the colour of a melanoma may be uneven, with more than one shade

The ABCD rule

If you notice any of the following signs, then see your doctor without delay.

Asymmetry
The two halves of your mole do not look the same.

Border
The edges of your mole are irregular, blurred or jagged.

Diameter - many melanomas are at least 6mm in diameter, the size of a pencil eraser

Colour
The colour of your mole is uneven, with more than one shade.

Diameter
Your mole is wider than 6mm in diameter (the size of a pencil eraser).

Other signs of skin cancer

  • a new growth or sore that won't heal
  • a spot, mole or sore that itches or hurts
  • a mole or growth that bleeds, crusts or scabs

What if I notice a change?

If you are concerned about skin changes then visit your doctor without delay.

Any change in a mole, freckle or normal patch of skin that occurs quickly, over weeks or months, should be taken seriously.


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