When you look closely at your child's head under a bright light, you'll spot light brown, sesame seed-sized bugs darting around. Those are the lice. Or, you may just see their eggs, called nits ...

Head lice are most common among young children — 6 million to 12 million lice outbreaks occur yearly in children between 3 and 11 in the US — though adults are vulnerable to head lice as well.

Head lice are parasitic insects that burrow to the root of people’s hair and suck the blood from their scalps. While many parents have to treat their children, knowing how to find and remove ...