Head lice (pediculosis)

Lice.  Photo from www.sciencephoto.com

Head lice — tiny blood-sucking insects that are easily passed from person to person. Despite the fact that in nature there are up to 150 species of lice, they are strictly specific parasites and parasitic only in certain animal species. Man can become infected with head lice only from other people, but not from a sick cat or guinea pig.

There are three types of lice that cause pediculosis a person — head, pubic and body lice.

Head lice — are insects grayish white color, size 2-4 mm. Typically, they are found on the scalp, but can affect also the eyebrows and eyelashes.

Reminiscent of head lice, but slightly superior to their size (2-5 mm). These lice can live in the human body, in the folds of clothing and bedding. When lice infection most commonly affected areas of contact with the skin folds and seams of clothing.

Pubic lice — a tiny (just 1-15mm) yellow-gray parasite whichunder a microscope resembles a small crab. However, the pubic louse can be seen with the naked eye — a small speck at the base of the hair. Most often it settles in hairy areas of skin around the genital area, but sometimes it can dwell in the armpits, on his mustache, beard, eyebrows and eyelashes.

Lice are very mobile, reproduce by laying Egg-nits whitish yellow color. Nits are firmly attached to the hair or lint cloth secret adhesive glands that produce a female.

Lice feed exclusively on human blood drinking at one time up to 0,003 ml. The average lifespan of 27-46 days.


Lice do not jump or fly, and running around. Therefore, infection usually occurs by direct contact between people. Head lice can run from person to person through the hair, especially long. Children tend to become infected with head lice of large groups: schools, day care centers, summer camps, when other people do their hair, combs, changing hats, sleeping on other people's pillows. In addition, head lice can be caught in a barber shop, hotel, train, hospital, as well as in the bath and pool.

Lice get to a healthy person through close household contact. They settled in the folds of clothing, of which crawl on the skin. Infection can occur with the use of dirty things and bed linen.

Pubic lice are usually transmitted through sexual contact, when the insects crawl from one partner to the other. But if I suddenly found that your wonderful husband (or wife) brought home this evil, we should not rush to accuse him of treason. It is known that the pubic louse, Let go of the person does not live more than a day, but its eggs can survive for almost a week. So that the transfer of lice could easily happen in a towel, bed linen and clothes.

What if this happens?

From the moment of infection until the first signs of the disease can take several weeks. After moving to a new host, a louse claws, paws firmly attached to the hair and begins to equip your life. In order to get food, it pierces the skin of the host proboscis. Salivary gland lice produce a special enzyme, which digests the blood and at the same time does not allow it to clot. In place of pubic lice bites are bluish marks that itch and itch.

Deferred eggs, nits female strengthens the hair so that the water can not wash them away. After a while of these eggs will hatch new lice.


Adult lice and their yaytsy found not only on the hair, but also wear in the seams. The presence of head lice is determined by the whitish nits attached to the hair of the head.

If you look closely to the skin around the genitals, then it can be seen grayish-bluish spots that do not fade from the pressure. It bites pubic lice. And if you take a magnifying glass, you'll see the parasites themselves — brownish point at the base of the hair. There also are whitish nits.

The most obvious sign of infestation of lice — itching. Zavshivevshy man begins to itch constantly, and on-site bites appear wound-scratching.

Most importantly — do not confuse pubic pediculosis with others, a much more severe genital infections. Correct to diagnose doctor-dermatologist.


In order to recover, of course, it is desirable to seek professional help from a doctor. However, if you are 100% sure that you are concerned about it lice, you can get rid of it yourself. It's very simple. Previously, these insects poisoned with kerosene and infected hair was shaved.

Today there were more efficient ways: for the budget — 10% or 5% sulfuric ointment or cream with benzyl benzoate, for the others — "Nittifor" "Spray-Pax"Or Spregal. The method is described in the application instructions.

After the treatment, all the underwear and bed linen to soak with bleach or boil, then ironed with a hot iron. Remember that when you need to treat pubic lice all sexual partners at the same time.

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