Head lice are similar in size to a sesame seed; those seeds atop hamburger buns. Newly hatched head lice are similar in size to grains of sand. Their colour ranges from dark brown to a lighter-colored brown. When head lice are full of blood, as they are after eating, they're darker brown. As the blood digests, the colour continues to lighten.

If you see small, bud-like attachments on strands of hair but not the scalp, you're looking at head lice eggs. The attachments can be white, cream or grey in color. The body heat that escapes via the head creates a warm environment which head lice prefer. In warmer, more humid climates however, eggs generally are laid a bit further away from a child's scalp. Eggs that are far away from the scalp usually are dead, old, empty or cold.

Lice are small, wingless, grayish-white insects with flattened, elongate bodies and somewhat oval heads. They are about 1/16 to 1/8 inch long.

Head lice do not hop, jump or fly. They migrate through direct contact with an infested person and their belongings. Pets do not transmit head lice, and poor personal hygiene does not cause an infestation. In fact, head lice prefer clean, healthy heads. Head lice do not live in, nor spontaneously generate from, the dirt, trees or the air. They live on the human head!

No, actually they are not. They are annoying, they itch, they eat blood like a mosquito, defecate on your scalp, and they are disgusting...but they are not harmful.

middot; First thing is don’t panic. Lice are a nuisance and have been stigmatized; they are NOT a serious medical problem.

Not necessarily. If members of your family don't share personal items, and if proper cleanup measures are taken, the infestation shouldn't spread. But, it has been known to happen!

Head lice CRAWL very fast and require head to head contact for transmission. It is possible that because of the way young children play, head lice are seen more widely amongst primary school children than adolescents or adults.

It is difficult to track head lice cases because head lice are not considered a disease and therefore public health departments and the Centers For Disease Control do not routinely track the number of head lice cases. However, schools and manufacturers of lice products estimate head lice cases at 12- 25 million infestations a year in the United States alone. Most of those infested are children under the age of twelve.

The most common symptom of a head lice infestation is persistent itching, particularly around the ears, back of the neck and crown, but some people never itch at all. Repeat infestations can cause some individuals to become super-sensitive to bites. Secondary bacterial infections can occur with excessive scratching. See a doctor if this occurs. Diagnosis of head lice is usually made by finding nits (lice eggs).

Getting rid of head lice is a three-step process. You must kill all the live lice, check for and remove all the nits by combing and manual nit picking, and do a reasonable job of cleaning the infested person's belongings and home environment. Please make sure you have head lice before treatment. Many people misdiagnose head lice and treat themselves or their children with chemicals unnecessarily.

People should also be aware that according to entomologists, any insect over time can develop resistance to pesticides. It is not surprising therefore, that many consumers, health professionals and entomologists report that head lice have become resistant to pediculicides. However, failure to follow directions, non-compliance and failure to pick nits manually can also result in a persistent head lice infestation.

If you have used a pediculicide correctly and still have live lice or new nits, you probably have a persistent case of head lice. According to the Palm Beach County Head Lice Task Force and the Head Lice Treatment and Prevention Project at Florida Atlantic University College of Nursing, persistent head lice is defined as three incidents of live lice found over a 6-week period.

There has never been a case of someone getting AIDS from head lice. According to the Harvard School of Public Health, head lice are not known to transmit infectious agents from person to person.

Yes, lice hate dry heat. You can put clothes, hats, towels, etc in a hot dryer for twenty minutes which should kill lice and their eggs.

By contact with an already infested person. Contact is common during play, at school, and at home (slumber parties, sports activities, on a playground). Headlice are highly adapted to live on the hair and scalp of humans. However, although the human scalp can provide them with feed for life, headlice are vulnerable to inbreeding. So, because outbreeding is a requirement for survival, this appears to be the reason for the strong urge to disperse onto other heads.