Head lice, itchy parasites that live on the scalp ... or other culprits, including dandruff, hair spray residue, and even cookie crumbs, he said. Or, other experts said, it could be that clinic ...

Dandruff, lice and hair loss are more common than most people think. If you are having one of these problems, we've compiled a list of simple tips and tricks to prevent and treat them.

Head lice are tiny insects that can live on your ... a doctor may recommend a different lice medication. Dandruff is a common condition caused by yeast overgrowth on the scalp.