It can be a little confusing (and freaky) when you or someone you love suddenly develops an unusually itchy scalp. While all the scratching could be related to something innocent, like dryness or ...

Add Yahoo as a preferred source to see more of our stories on Google. It can be distressing to wake up with a mysterious swollen red rash on your ankle. Could that rash be an insect bite? And what ...

Head lice are considered a nuisance — a pest to be evicted from the hair on your head or the head of a loved one with a special comb or shampoo. But there's more to lice than their elimination. These ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Reviled the world over for making our scalps itch and rapidly ...

A new laboratory study suggests that human body lice are more efficient at transmitting Yersinia pestis, the bacterium that causes plague, than previously thought, supporting the possibility that they ...