Detecting Skin Cancer - Symptoms & Signs
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.
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.
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.
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).
- 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