Raisingkids.co.uk's skin specialist, Dr Bernice Krafchik, explains why it's important to let a specialist take a look at any unusual skin marks.

Raisingkids member's problem
My son has lots of dark freckles on his face. Is that normal?

Dr Krafchik's advice
Freckles are normally the result of sun exposure. They're more common in the summer months and tend to fade in the winter. If your son's fair-skinned, and has had lots of exposure the freckles could be quite marked. On the other hand, there are many other conditions that cause dark marks on the body such as moles and mole-like lentigines.

It's important to know what these lesions are before advising you whether they're normal. This is something to be diagnosed face-to-face. Ask your GP to refer you to a dermatologist.

• Read More Of Bernice's Answers