According to the Cancer Council Australia a skin check should include: 

• Checking your entire body as skin cancers can sometimes occur in parts of the body not exposed to the sun, for example soles of the feet, between fingers and toes and under nails.
• Undressing completely and making sure you have good light.
• Using a mirror to check hard to see spots, like your back and scalp, or get a family member, partner or friend to check it for you.

The ABCD of melanoma detection can be a useful guide when checking your skin:

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  A is for Asymmetry – Look for spots that lack symmetry. That is, if a line was drawn through the middle, the two sides would not match up.

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  B is for Border – A spot with a spreading or irregular edge (notched).

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  C is for Colour – Blotchy spots with a number of colours such as black, blue, red, white and/or grey.

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  D is for Diameter – Look for spots that are getting bigger.

If you even slightly concerned or would like more information please speak with your doctor.

Articles & Images from Cancer Council Australia accessed via:

http://www.cancer.org.au/preventing-cancer/sun-protection/check-for-signs-of-skin-cancer.html