Head lice, technically known as pediculosis capitis, are a very common problem, affecting millions of people each year—especially preschool and elementary school-aged children. Head lice are tiny, wingless, parasitic insects that live and feed on blood from your scalp. Getting head lice aren’t a sign of bad personal hygiene or an unclean living environment. This itchy infestation most commonly spreads through close personal contact and by sharing personal belongings. They present as itchy bumps on the back of the neck and scalp and sometimes over the ears. A trained dermatologist will look for the lice and their egg cases which attach to the hair and are called nits. Both over-the-counter and prescription medications are available to treat head lice. However, following the directions properly and taking necessary steps at home are important to prevent head lice from recurring.