Lice
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Head lice occur on the scalp and are easiest to see at the nape of the neck and over the ears. Small nits (eggs) resembling tiny pussy willow buds about the size of dandruff flakes are visible on hair shafts.
Lice are tiny, wingless, parasitic insects that feed on your blood. Lice are easily spread — especially by schoolchildren — through close personal contact and by sharing belongings.
There are three types of lice:
People can have good personal hygiene and still get lice. Unless treated properly, this condition can become a recurring problem.
Head lice feed on blood from the scalp. The female louse lays eggs (nits) that stick to hair shafts.
Signs and symptoms of lice include:
Usually you can get rid of lice by taking self-care steps that include using nonprescription shampoo that’s specifically formulated to kill lice.
However, see your doctor if:
You can get lice by coming into contact with either lice or their eggs. Eggs hatch in about one week. Lice can’t fly or walk on the ground. They spread through:
It’s difficult to prevent the spread of head lice among children in child care and school settings. There’s so much close contact among children and their belongings that lice can spread easily. It’s no reflection on your hygiene habits or those of your children, and it’s not a failure on your part as a parent if your child gets head lice.
Some over-the-counter products claim to repel lice, but more scientific research is needed to prove their safety and effectiveness.
A number of small studies have shown that ingredients in some of these products — mostly plant oils such as coconut, olive, rosemary and tea tree — may work to repel lice. However, these products are classified as “natural” so they aren’t regulated by the Food and Drug Administration (FDA), and their safety and effectiveness haven’t been tested to FDA standards.
Until more research proves the effectiveness of head lice prevention products, the best approach is simply to take thorough steps to get rid of the lice — and their eggs — so that you don’t have more lice to deal with.
However, it’s not realistic to expect that you and your child can eliminate all the types of contact that may result in the spread of lice.
Your child may have nits in his or her hair but not necessarily develop a case of head lice. Some nits are empty eggs. However, nits that are found within 1/4 inch (6.4 millimeters) of the scalp should be treated — even if you find only one — to prevent the possibility of hatching.
Nits that are farther away from the scalp are probably from an old infestation, but should be removed to prevent a recurrence.
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Lice
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