A little itch is nothing to be concerned about, but if you can't stop scratching your head, here are some causes of an itchy scalp.

Medically reviewed by William Truswell, MD Sea lice bites are an itchy rash caused by jellyfish larvae that get trapped in swimsuits after swimming in the ocean. The larvae release toxins that trigger ...

School’s back and that means head lice will once again plague households with primary school-aged children. Here’s what you can to do to bust those nits.

In pre-Columbian times, as today, people apparently resisted cutting off all the hair, the easiest way to get rid of lice. “Vanity is stronger than itching,” says lead scientist Bernardo Arriaza.

About 4-24 hours later, you start to itch and sting. And you get a red rash that looks like acne and lasts about a week. Here's how to avoid sea lice: Wear just your bathing suit. Fewer clothes ...

Well, at least their hair. It's "super lice," and they are on the rise. Thanks to a genetic mutation, super lice are resistant to the treatments you can buy over the counter. But they can still be ...

You cannot prevent their spread by using condoms. It is possible, but rare, to get pubic lice from sharing infected towels, bedding or clothing. Symptoms usually include an intense itching in the ...