Head lice

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Definition Symptoms Causes Risk factors When to seek medical advice

Tests and diagnosis Complications Treatments and drugs Prevention Lifestyle and home remedies

Definition

Head lice are tiny, wingless, parasitic insects that live and feed on blood from your scalp. Though head lice are tiny, an infestation can cause a major nuisance for you and your household.

Head lice are highly adaptable creatures and a very common problem, second only to the common cold among communicable diseases affecting school children. Getting head lice isn't a sign of bad personal hygiene or an unclean living environment. This itchy infestation, also called pediculosis capitis, most commonly spreads through close personal contact and by sharing personal belongings.

Both over-the-counter and prescription medications are available to treat head lice. Following the directions properly and taking necessary steps at home are important to prevent head lice from recurring.

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Symptoms