Lice - Treatment Overview
Lice will not go away without proper treatment. Treatment should begin as soon as symptoms of lice are noticed or when live lice and eggs (nits) are seen on the person's body or in clothing. Specific treatment depends on the type of lice infestation.
Head lice and pubic lice are killed with over-the-counter or prescription medicines applied to the skin or scalp, and sometimes with a prescription pill. The most common way to treat lice is to use medicated creams, lotions, or shampoos that kill lice. Some people use a comb to remove head lice and their eggs in addition to or instead of using medicine. In Britain, where lice have become resistant to medicated lotions and shampoos, one study found that using fine-toothed combs with a conditioner (wet-combing) helped get rid of head lice.1
Body lice , which live and lay eggs in the seams of clothing, are destroyed by washing clothing in hot water [130°F (54.4°C) or higher] for 5 minutes or more. This will usually kill adult lice and prevent eggs from hatching. Body lice are only present on the skin when they feed and will usually go away if you bathe daily and wear clean clothes.
Children with head lice can return to school or day care after their first treatment. Some schools have a "no nits" policy in which the child can go back to school or day care only after eggs have been removed. "No nits" policies are discouraged by medical experts. Most doctors agree that a child should be allowed to return to class after proper treatment and should be urged to avoid close head-to-head contact with other students. Confidentiality should be maintained so as not to embarrass a child who has head lice.
Itching may continue even after all lice are destroyed. This happens because of a lingering allergic reaction to their bites. Over-the-counter cortisone (corticosteroid) creams or calamine lotion may help. For severe itching, antihistamine medicines (such as Benadryl) or stronger, prescription-strength corticosteroid creams may be needed. Don't give antihistamines to your child unless you've checked with the doctor first. And don't use cortisone cream for longer than 7 days without talking with your doctor. Do not use the cream on children younger than age 2 unless your doctor tells you to. And don't use it in the rectal or vaginal area in children younger than age 12 unless you've checked with the doctor first.