Lice for Building Immunity Recent studies have shown the benefits of having lice. While it may sound ridiculous and unbelievable, there's scientific evidence that a certain kind of louse can be beneficial in reducing the chances of developing immune deficiencies.
Head lice are not known to spread disease. Head lice can be an annoyance because their presence may cause itching and loss of sleep. Sometimes the itching can lead to excessive scratching that can sometimes increase the chance of a secondary skin infection.
If you leave head lice untreated, the symptoms of lice infestation will worsen. The lice will continue to feed on the scalp, spreading from person to person, and the itching and discomfort will become more severe. As the lice population grows, so will the amount of eggs they lay, raising the risk of reinfestation.
Getting head lice isn't a sign of poor hygiene or unclean surroundings. Head lice prefer clean hair to attach and lay their eggs.
Coconut, tea tree oil, lavender, eucalyptus, rosemary, lemon grass, and peppermint are scents popularly believed to repel lice. Using any coconut scented shampoo and conditioner is an easy way to increase your defense. At 1% concentration, tea tree oil killed 100% of head lice after 30 minutes.
Life Cycle of Lice
If lice fall off the scalp, they will die within a day or two. The female louse can lay up to 8 nits per day. The eggs hatch in about a week (6 to 9 days).
If you're infested with body lice for a long time, you may experience skin changes such as thickening and discoloration — particularly around your waist, groin or upper thighs. Spread of disease. Body lice can carry and spread some bacterial diseases, such as typhus, relapsing fever or trench fever.
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.
How soon do symptoms appear after exposure? 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.
The longer answer goes back over 800,000 years. Scientists believe head lice began to evolve on a different path than body lice about the time humans started to wear more clothing. Body lice evolved to attach to clothing fibers which are typically thicker and stronger than a human hair.
Lice are attracted to the blood they get through your scalp – short, long, clean or dirty.
Human lice likely co-evolved with people. Our primate relatives harbor their own species of lice. Recent evidence is suggestive that body (clothing) lice evolved from head lice.
Head lice most often affect children. The insects usually spread through direct transfer from the hair of one person to the hair of another. Having head lice isn't a sign of poor personal hygiene or an unclean living environment. Head lice don't carry bacterial or viral diseases.
As far as we know, there have not been any clinical studies proving any human population to be immune to head lice. However, head lice can have difficultly attaching their eggs to hair that is thick or coarse; therefore, those individuals may be less likely to experience head lice infestation.
Head lice are most active at night. Itching is the first and most common symptom but may not appear for weeks after contracting lice. The itching is caused by an allergic reaction to the bug bites which can cause sores or raw skin on the scalp.
Permethrin lotion 1% is approved by the FDA for the treatment of head lice. Permethrin is safe and effective when used as directed. Permethrin kills live lice but not unhatched eggs.
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.
If the freezer is 5°F or lower, all lice and eggs should be dead within 10 hours. Also, keep items and areas off-limits to people for 48 hours to limit exposure to any live lice.
Head lice are annoying, but they're not dangerous and they don't spread disease. They're not a sign of poor hygiene — head lice need blood and they don't care whether it's from someone who's clean or dirty. It's best to treat head lice right away to prevent them from spreading.
In the United States, infestation with head lice (Pediculus humanus capitis) is most common among preschool- and elementary school-age children and their household members and caretakers.
Untreated head lice may degrade the scalp and affects it health and that of the hair. If the follicles become blocked, then hair loss may occur. It is hard to have well-conditioned hair if it is covered in head lice eggs, lice and bacteria.
Getting Lice While Bald
Lice may attempt to attach, but the environment is unsuitable for their survival. While bald people may become temporarily affected by head lice they often leave for a better suited host or die off. Thin or sporadic hair can still attract lice.
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.