There are three types of skin cancer, and all look different. The following ABCD-Easy rules show you a few changes that might indicate a 'melanoma', which is the deadliest form of skin cancer.

As skin cancers vary, you should tell your doctor about any changes to your skin, even if they are not similar to those mentioned here.

Remember - if in doubt, check it out! If your GP is concerned about your skin, make sure you see a Consultant Dermatologist, the most expert person to diagnose a skin cancer. your GP can refer you via the NHS.

Asymmetry - the two halves of the area may differ in shape

Border - the edges of the area may be irregular or blurred, and sometimes show notches

Colour - this may be uneven. Different shades of black, brown and pink may be seen

Diameter - most melanomas are at least 6mm in diameter. Report any change in size, shape or diameter to your doctor

Expert - if in doubt, check it out! If your GP is concerned about your skin, make sure you see a Consultant Dermatologist, the most expert person to diagnose a skin cancer. Your GP can refer you via the NHS