Body lice generally are found on clothing and bedding used by infested people. Sometimes body lice are be seen on the body when they feed. Body lice eggs usually are seen in the seams of clothing or on bedding. Occasionally eggs are attached to body hair.
Where are head lice most commonly found? Head lice and head lice nits are found almost exclusively on the scalp, particularly around and behind the ears and near the neckline at the back of the head. Head lice or head lice nits sometimes are found on the eyelashes or eyebrows but this is uncommon.
You may be able to see the lice, but they're often hard to spot because they're small, avoid light and move quickly. Lice eggs (nits) on hair shafts. Nits stick to hair shafts and may be hard to see because they're very tiny. They're easiest to spot around the ears and the hairline of the neck.
The most common symptom of head lice is itching, especially on the back of your head and neck and near your ears — areas where lice are more likely to live. Symptoms of head lice include: Feeling like something in your hair is moving (tickling).
Look for lice crawling on the scalp where the hair is parted or on the hair shaft. The lice will be dark in color and the size of a poppyseed. Look for nits near hair follicle about ¼ inch from scalp. Nits (eggs) will be white or yellowish-brown.
While body lice tend to bite during the day, bed bugs bite at night, when the host is lying in the infected area.
Just like with mattresses, lice can only live on any bedding—whether it's sheets, pillows, or comforters—for 1-2 days. Without a human scalp as a source for food (blood) for longer than 1-2 days, lice cannot survive.
Head lice cannot live for long on pillows or sheets. It is possible for a live louse that has come off a person's head to crawl onto another human host who also puts their head on the same pillows or sheets.
Most commonly, head lice are spread by direct head-to-head contact with an infested person. They may also be spread by sharing personal items such as combs, brushes, other hair-care items, towels, pillows, hats, and other head coverings. Dogs, cats, and other pets do not spread head lice.
The peak season for lice infestation is August through October and again in January. Head lice are tiny parasitic insects that feed on human blood. Lice come in three forms: nits (eggs), nymphs (baby lice), and adults. Nits are white or yellowish-brown and about the size of a poppy seed.
Not everyone feels lice moving around on their scalp, but some people do. Dr. Garcia says that most of her patients say they “don't feel anything,” but others may get a creepy, tickling sensation as lice move around their head.
Washing, soaking, or drying items at a temperature greater than 130°F can kill both head lice and nits. Dry cleaning also kills head lice and nits. Only items that have been in contact with the head of the infested person in the 48 hours before treatment should be considered for cleaning.
Body lice infestations (pediculosis) are spread most commonly by close person-to-person contact but are generally limited to persons who live under conditions of crowding and poor hygiene (for example, the homeless, refugees, etc.).
Heat Method:
There are recent studies that show that treatment of lice with heat can be quite effective in killing head lice. Products such as Lousebuster are very effective but even a home hairdryer can successfully treat lice.
Avoid head-to-head (hair-to-hair) contact during play and other activities at home, school, and elsewhere (sports activities, playground, slumber parties, camp). Do not share clothing such as hats, scarves, coats, sports uniforms, hair ribbons, or barrettes. Do not share combs, brushes, or towels.
For example, hats, scarves, pillow cases, bedding, clothing, and towels worn or used by the infested person in the 2-day period just before treatment is started can be machine washed and dried using the hot water and hot air cycles because lice and eggs are killed by exposure for 5 minutes to temperatures greater than ...
Adult lice can live up to 30 days on a person's head. To live, adult lice need to feed on blood several times daily. Without blood meals, the louse will die within 1 to 2 days off the host.
It's essential to wash all bedding after a head lice treatment. The heat from a hot water cycle will ensure that no surviving lice can find a host again. Keep in mind that anything on the bed could be infected if the louse crawled around.
Lice do not hop or fly but can crawl at a rapid rate (23 cm/min under natural conditions) (8).
Head lice in adults are more common than you think. As a parent, proximity to children puts you at risk of catching head lice from them. Even as an adult without children you may meet children or the parents of children, and so risk catching head lice from them.
Lice are highly contagious and can spread quickly from person to person, especially in group settings (like schools, childcare centers, slumber parties, sports activities, and camps). Though they can't fly or jump, these tiny parasites have specially adapted claws that let them crawl and cling firmly to hair.
Some people may not have symptoms, particularly with the first infestation or when the infestation is light. It may take 4-6 weeks for itching to appear the first time a person has head lice.
Although sometimes more tedious than chemical methods, mechanical lice treatment methods are far more effective at destroying lice for good. Lice may develop resistances to certain chemicals; however, they will never be able to resist being squished, zapped, smothered, or manually removed by the human hand.