Materiały źródłowe

• #1 Head lice – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/head-lice/symptoms-causes/syc-20356180

  Head lice are tiny insects that feed on blood from the human scalp. The insects usually spread through direct transfer from the hair of one person to the hair of another. […] A head louse is a tan or grayish insect about the size of a strawberry seed. It feeds on human blood from the scalp. The female louse produces a sticky substance that firmly attaches each egg to the base of a hair shaft less than 1/4 inch (5 millimeters) from the scalp. […] Head lice crawl, but they can’t jump or fly. Head lice often spread from one person to another by direct head-to-head contact, often within a family or among children who have close contact at school or play.

• #2 About Head Lice | Lice | CDC

  https://www.cdc.gov/lice/about/head-lice.html

  Head lice, or Pediculus humanus capitis, are parasitic insects that feed on human blood. […] Head lice mainly spread by direct contact with the hair of a person infested with lice. […] Adult female head lice are usually larger than males and can lay about six eggs each day. […] Nits (lice eggs) cannot hatch and usually die within a week if they are not kept at the same temperature as those found close to the scalp. […] The most common way to get head lice is by head-to-head contact with a person who already has head lice. […] Getting head lice is not related to cleanliness of you or your environment. […] Although not as common, head lice may spread by wearing clothing, such as hats, scarves, coats, sports uniforms, or hair ribbons worn by an infested person. […] Contracting lice from a wig or hairpiece is extremely unlikely. […] Animals do not get or spread head lice. […] Misdiagnosis of head lice infestation is common. […] Finding a live nymph (baby louse) or adult louse on the scalp or hair is the best way to diagnose a head lice infestation.

• #3 How do you get lice? Causes and risk factors

  https://www.medicalnewstoday.com/articles/322485

  Lice spread through physical contact. Children are more likely to contract lice than adults. […] Lice can spread through physical contact. They cannot fly or jump, but they can crawl from one head to another. This can happen when peoples strands of hair meet during close contact. […] Researchers are unsure where lice originated, but they know that lice have affected primates for at least 25 million years, eventually spreading to humans. […] Head lice only affect humans, and they will not jump onto pets or other animals. […] Lice can also travel on objects that have touched the head. A person may get lice after sharing objects such as hats or towels. […] However, lice cannot survive long without feeding. They must move to a new head within around 24 hours, or they will die. […] Nymphs, which are young lice, can only survive for a few hours outside of a human scalp.

• #4 Head Lice Fact Sheet – MN Dept. of Health

  https://www.health.state.mn.us/diseases/headlice/headlice.html

  The head louse is an insect that can infest people. […] Head lice multiply rapidly, laying small greyish-colored, oval-shaped eggs (called nits) which they glue to the base of the hair, close to the scalp. […] Head lice have no wings and do not fly or jump, but they can crawl or run through hair quickly. […] Most commonly, head lice are spread by direct head-to-head contact with an infested person. […] Dogs, cats, and other pets do not spread head lice. […] Head lice cannot survive off the human body for more than two days. […] They do not reproduce off the body. […] They do not live on pets.

• #5 Head Lice and Nits (Causes, Symptoms, and Treatment)

  https://patient.info/childrens-health/head-lice-and-nits

  Head lice are small insects that live in human hair and feed on blood from the scalp. Their eggs are called nits. […] Lice feed from the blood on your scalp, and it is the bites – and your skin’s reaction to the bites – which make you itch. […] The more time you spend with your head in close contact with someone who has nits, the more likely you are to catch them yourself. […] Head lice don’t jump and they don’t fly, so you do have to have hair-to-hair contact. […] Head lice are common all over the world. […] They are not a sign of dirty hair or poor hygiene. Close hair-to-hair contact is usually needed to pass lice on. […] Most head lice infections are caught from family or close friends who are not aware that they have head lice.

• #6 Azthena logo with the word Azthena

  https://www.news-medical.net/health/Causes-of-head-lice.aspx

  Head lice infestation is caused by a tiny insect called the Pediculus humanus capitis. […] Lice infestation may affect the head, body (by Pediculus humanus variety corporis) and groin (Pthirus pubis). […] The adult female louse lays eggs, called nits. […] The lice prefer to attach the eggs close to the scalp. […] The female head louse lays as many as 10 eggs per 24 hours, usually at night. […] The eggs take around 7 to 10 days to hatch. […] An average infestation with head louse involves 10-20 adult lice. […] The infestation is spread by close physical contact and by shared objects like combs, helmets, caps, scarves and bedding. […] Risks of getting infected include overcrowding, closed groups like school children, ill or malnourished patients, poor hygiene etc. […] Girls are more at risk due to closer head-to-head contact. […] Asians and Whites are more at risk. This may be due to warmer weather. […] African Americans are less at risk since their thicker and curlier hair is not optimally suitable for the lice.

• #7 Head Lice: Causes and Symptoms – Uniprix

  https://www.uniprix.com/en/article/lice

  Lice are tiny insects, 1 to 3 mm long, about the size of a sesame seed, and greyish or tan in colour. They live on the scalp near the hair roots for up to 30 days. […] Female head lice lay 3 to 8 eggs called nits each day until they die. They attach the nits to hair shafts about 6 mm from the scalp with a cement-like substance. […] Lice are parasites that feed exclusively on human blood. Because they need to feed several times a day and require a certain temperature range to survive, lice that fall off a person’s head will die within 2 days. […] Nits can survive for up to 10 days away from a person’s head, but the nymphs that hatch will die within 2 days if they cannot reach a person’s head. […] Lice can move very quickly from one infested person’s head to another by direct hair-to-hair contact.

• #8 Head Lice Causes, Adult Symptoms, Treatment, Shampoo, Tablet

  https://www.medicinenet.com/head_lice/article.htm

  Head lice (Pediculus humanus capitis) are parasites that can be found on the heads of people. Pediculosis is the term for an infection with head lice. […] A child can contract head lice in several ways. […] Getting a head lice infection has nothing to do with personal hygiene. Anyone can become infested with head lice. […] Anyone who comes in close contact with someone who already has head lice, or even contaminated clothing and other belongings, is at risk for acquiring head lice. […] There are three forms of lice, namely the nit, the nymph, and the adult louse. […] Nits are lice eggs. […] The nit hatches into a baby louse called a nymph. […] The adult louse is about the size of a sesame seed, has six legs, and is tan to grayish-white in color. […] To effectively eliminate head lice, the infested individual, family members who are also infested, and the home must all be treated.

• #9 Head lice Guide: Causes, Symptoms and Treatment Options

  https://www.drugs.com/health-guide/head-lice.html

  Head lice are small, parasitic insects that infest hair on the head of people. They feed only on the blood of people, and feed once or more each day. A female louse can lay more than 100 eggs, called nits, in her lifetime. The female louse secretes a glue to attach each egg to a scalp hair, usually close to scalp level. They hatch about 8 days after they are laid, and grow to the adult stage about 9 to 12 days after hatching. […] Head lice are acquired by direct contact with an infested person’s hair. […] Head lice neither are caused by, nor a sign of, poor hygiene or housekeeping.

• #10 Head Lice in Children

  https://www.nationwidechildrens.org/conditions/health-library/head-lice-in-children

  Head lice are tiny parasitic insects that can infest the skin. They live on peoples heads and feed on their blood. […] Head lice are very contagious. They spread from person to person by close body contact, and by shared clothes and other personal items. […] Lice are highly contagious, spreading from person to person by close body contact, and by shared clothes and other personal items. […] The eggs laid by lice can usually be seen. This makes it easy for your child’s healthcare provider to diagnose. […] Lice are treatable. Some medicines are available over the counter. but talk with your childs healthcare provider if you are unsure of the diagnosis. […] To prevent lice from infesting other people in the home, sheets, blankets, and other personal items need to be washed.

• #11 Head lice: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/000840.htm

  Head lice are tiny insects that live on the skin covering the top of your head (scalp). Head lice may also be found in the eyebrows and eyelashes. […] Lice spread by close contact with other people. […] Head lice infect hair on the head. Tiny eggs on the hair may look like flakes of dandruff. However, instead of flaking off the scalp, they stay in place. […] Head lice can live up to 30 days on a human. Their eggs can live for more than 2 weeks. […] Head lice spread easily, particularly among school children ages 3 to 11 years. Head lice are more common in close, overcrowded living conditions. […] You can get head lice if: You come in close contact with a person who has lice. You touch the clothing or bedding of someone who has lice. You share hats, towels, brushes, or combs of someone who has lice. […] Having head lice causes intense itching but does not lead to serious medical problems. Unlike body lice, head lice never carry or spread diseases. […] Having head lice does not mean the person has poor hygiene or low social status.

• #12 Head Lice

  https://pmc.ncbi.nlm.nih.gov/articles/PMC5165061/

  Head lice occur almost exclusively in vulnerable groups: school children, homeless people, refugees, and slum dwellers. […] The spread of head lice depends on spatial and temporal factors, including the number of susceptible hosts, the duration of the infestation, and the duration and nature of hair-to-hair contact. […] The main transmission route for head lice is therefore close head-to-head contact. The main place where this occurs is in children during play. Transmission via objects is a rare exception and is epidemiologically irrelevant. […] The main symptom is itching, caused by sensitization to louse saliva, which starts at about 4 to 6 weeks after the first infestation. […] Overuse of neurotoxic pediculicides (organophosphates: malathion, carbamate [carbaryl], pyrethrin [chrysanthemum extract]) or pyrethroids (synthetic derivatives: permethrin, phenothrin, deltamethrin) has resulted in resistant populations of head lice on all continents.

• #13 Head lice and nits | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/skin-hair-and-nails/head-lice-and-nits/

  Head lice are tiny insects that live in hair. Nits are the empty egg cases attached to hair that head lice hatch from. […] Head lice are a common problem, particularly in school children aged 4 to 11. […] Head lice are spread by direct head to head contact. They climb from one persons hair to anothers. […] Lotions and sprays dont prevent head lice and should only be used if a live louse has been found in your or your childs hair.

• #14 Head lice – BAD Patient Hub

  https://www.skinhealthinfo.org.uk/condition/head-lice/

  Head lice are usually picked up by head-to-head contact; it takes about 30 seconds for a single louse to transfer from one scalp to another. […] Head lice live only on humans and die in a day or two away from the human scalp. They cannot be caught from animals. […] Head lice have to feed on human blood several times a day to survive, and their bites, saliva and faeces often make the scalp itchy. […] The diagnosis is made by identifying active head lice through careful examination of the scalp. […] Yes, but this is not always easy as some lice are now resistant to the insecticides used to treat them, and repeated infestations are common. […] Treatment is needed only when an active louse infestation is present; as shown by the presence of living and moving lice. […] A physical insecticide works by physically coating the surfaces of head lice and suffocating them, so resistance is unlikely to develop.

• #15 Head Lice (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/head-lice.html

  Head lice are tiny wingless insects. They live among human hairs and feed on blood from the scalp. […] Head lice are a common problem, especially for kids. They spread easily from person to person, and sometimes are tough to get rid of. […] 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. […] Head lice spread quickly from person to person, especially in group settings like schools, childcare centers, slumber parties, sports activities, and camps. […] They spread through head-to-head contact, and sharing clothing, bed linens, combs, brushes, and hats. […] Having head lice is not a sign of dirtiness or poor hygiene. The pesky little bugs can be a problem no matter how often kids do or don’t wash their hair or bathe.

• #16 Head Lice Infestation: Causes, Symptoms & Diagnosis

  https://www.healthline.com/health/head-lice

  Head lice are contagious. You can become infected with head lice when the insects crawl onto your head. Ways you might get head lice include: […] While transmission of lice via inanimate objects may be possible, its been found to be highly unlikely. […] Again, it should be stressed that the biggest concern for transmission is close head-to-head contact occurring mainly in children during play. […] There are some differing opinions on the transmission of head lice via inanimate objects, but the science doesnt seem to support transmission in this manner.

• #17 Head Lice: Causes, Symptoms, and Treatment | Doctor

  https://patient.info/doctor/head-lice-pro

  Head lice infestation (pediculosis capitis) is caused by the parasitic insect Pediculus humanus capitis, which lives on and among the hair of the scalp and neck of humans. […] Adult lice survive by taking a feed of blood from their host several times a day. […] Transmission of head lice usually requires head-to-head contact. […] Risk factors include age (3-12 years), sex (female) and ethnicity (any other than black). […] There is no evidence that head lice have a preference for either clean or dirty hair. […] If left untreated, infestation with head lice may persist for long periods, often for more than one year. […] There is no evidence for any benefit of head lice repellents, or using head lice treatments prophylactically. […] There is also no evidence that measures beyond normal personal hygiene, housekeeping and laundry can prevent re-infestation.

• #18 What Is Head Lice? Symptoms, Causes, Diagnosis, Treatment, and Prevention

  https://www.everydayhealth.com/lice/

  Girls have a 2 to 4 times higher chance of becoming infested by lice than boys. […] Black children in the United States have far fewer reported head lice infestations than other ethnic groups, according to a report. […] Its thought that this may be due to differences in hair thickness and curl. […] The best way to zero in on an accurate diagnosis of head lice is to find a live nymph or adult louse on the scalp or hair. […] The kicker, of course, is that those lice mate and produce more eggs, thus more lice. […] Its only recommended that you proceed with head lice treatment if an active infestation of head lice is confirmed. […] There are several prescription and nonprescription treatments that effectively kill head lice. […] If an at-home product doesnt knock out the infestation, talk to your doctor or dermatologist.

• #19 Head Lice Management Guidelines–UC IPM

  https://ipm.ucanr.edu/home-and-landscape/head-lice/pest-notes/

  The head louse, Pediculus humanus capitis, can infest people of all ages, but most commonly affects children 4 to 12 years of age since they often play in close contact with one another. […] Head lice are mainly acquired through direct head-to-head contact with an infested person’s hair. […] Diagnosis of a head lice infestation requires the detection of a living louse crawling on the scalp. […] Head lice spend their entire life on the hairy part of the human head. […] Lice can survive off a head on inanimate objects and surfaces for only a very short amount of time. […] Each adult female produces about 5 or more eggs in a 24-hour period. […] Because people have a constant body temperature, head lice reproduce continuously throughout the year. […] Head lice found in the United States prefer hair that is round in cross section.

• #20 Facts & Myths of Head Lice and Lice Treatments

  https://liceclinicsnorthgwinnett.com/facts-myths-head-lice-treatments/

  Eggs are laid by adult female lice and usually take about a week to hatch into nymphs. […] While its more commonly spread among children, parents and other adults are not immune. […] Head lice actually prefer a clean head of hair. […] Head lice cannot live on pets. Head lice can only live on human heads. […] Actual clinical results show that lice cannot live past 16 hours without feeding on a blood meal. […] Lice are not environmental pests so pesticide sprays for furniture and bedding are unnecessary. […] Precise data on how many people get head lice each year is not available. The CDC estimates that between 6 and 12 million children between the ages of 3 and 11 contract head lice each year. […] Poor bathing habits encourage lice infestations. Head lice can spread disease.

• #21 Pediculosis and Pthiriasis (Lice Infestation): Background, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/225013-overview

  Causative organisms include P humanus capitis (head louse), P humanus corporis (body louse), and P pubis (pubic louse) […] Pediculosis capitis is transmitted through direct contact with an infested individual. Head-to-head contact, whether at school, home, or during play, can lead to a lice infestation; personal hygiene and environmental cleanliness do not contribute to the risk. There is no correlation between head lice and low socioeconomic status. […] Risk factors for body lice infestation include close, crowded living situations (eg, crowded buses and trains, prison camps) and infrequent washing and/or changing of clothing. P corporis can be acquired via bedding, towels, or clothing recently used by an individual infested with lice; thus, individuals who are homeless, who are impoverished, or who are living in refugee camps are at high risk for infestation.

• #22 Head Lice: Causes and Risk Factors

  https://www.verywellhealth.com/head-lice-causes-and-risk-factors-2633641

  Lice infestations are not related to hygiene, either personal (showering, washing hair) or environmental (the cleanliness of the home or school). […] Lice infestations occur in families of all socioeconomic classes. […] Lice continue to spread the longer a case goes undiagnosed and untreated. […] Myths and misinformation can continue the cycle of spreading lice and getting an infestation again and again. […] Lice are minuscule parasitic insects. They’re unrelated to any sort of microbial infection and do not spread disease.

• #23 Head lice infestation – Wikipedia

  https://en.wikipedia.org/wiki/Head_lice_infestation

  Head lice are spread by direct contact with the hair of someone who is infected. […] The cause of head lice infestations in children is not related to cleanliness. […] Head lice feed only on human blood and are only able to survive on human head hair. […] The presence of live lice indicates an active infestation while the presence of nits indicates a past or currently inactive infection with the potential to become active. […] The cause of head lice infestations is not related to cleanliness. […] The number of cases of human louse infestations (or pediculosis) has increased worldwide since the mid-1960s, reaching hundreds of millions annually. […] Despite improvements in medical treatment and prevention of human diseases during the 20th century, head louse infestation remains stubbornly prevalent. […] The United Kingdom’s National Health Service report that lice have no preference for any type of hair be it clean, dirty, or short. […] The California Department of Public Health indicates that chronic head lice infestation may be a sign of socioeconomic or family problems.

• #24 How to manage head lice

  https://pmc.ncbi.nlm.nih.gov/articles/PMC1070891/

  People are infested by 3 types of lice: body lice (Pediculus humanus var corporis), head lice (P h var capitis), and crab or pubic lice (Phthirus pubis). […] Of the 3 lice types, head lice get the most attention because they are thought to be highly prevalent and to be developing resistance to commonly used pediculicides. […] The Centers for Disease Control and Prevention (CDC) report that 6 to 12 million people in the United States are infested each year with head lice. […] Head lice are thought to be transmitted mainly through head-to-head contact. […] Head lice are obligate ectoparasites that live on human skin and can survive only on human blood; they do not infest other animals. […] The adult female louse firmly attaches 7 to 10 eggs a day to human hair using a gluelike, water-insoluble substance.

• #25 Head Lice

  https://pmc.ncbi.nlm.nih.gov/articles/PMC5165061/

  The efficacy of permethrin fell from 97% in the 1990s to 30% in 2010. […] Dimethicones are the treatment of choice, with 97% efficacy. […] The main transmission route for head lice is direct head-to-head contact. Field studies suggest that transmission via inanimate objects is not relevant. […] The presence of lice and eggs is best demonstrated by wet combing using a metal detection comb (nit comb).

• #26 Head Lice Management Guidelines–UC IPM

  https://ipm.ucanr.edu/PMG/PESTNOTES/pn7446.html

  Head lice infestation incidence is indeed increasing due to widespread resistance to many of the commonly used over-the-counter pyrethrin or pyrethroid-based insecticidal shampoos. […] Head lice which are resistant to the active ingredients will survive. […] Lice are increasingly resistant to pyrethrin and permethrin. […] The efficacy of a treatment also depends on the number of lice present. […] Select a product with an active ingredient that head lice have not developed resistance to, for example, products containing benzyl alcohol, spinosad, and dimethicone.

• #27 How To Get Rid Of Head Lice | KidsHealth New Zealand’s Trusted Voice On Children’s Health

  https://www.kidshealth.org.nz/head-lice

  head lice are small, flat insects that live and lay eggs on the human scalp – the scalp provides food and warmth for the eggs to hatch […] anyone can catch head lice – catching them has nothing to do with poor hygiene […] head lice spread by crawling from the hair of one person to another […] head lice can only crawl from hair to hair. They can’t fly or jump from head to head […] head lice only survive on humans. They die quickly when they are not on the head, usually within 24 hours […] catching head lice has nothing to do with poor hygiene […] some head lice shampoos from supermarkets and pharmacies are becoming less effective because head lice have developed resistance to them. Dimethicone is not an insecticide. It kills head lice by suffocation and disrupting the ability of the head lice to regulate water. It is unlikely head lice will develop resistance, as they can with other products.

• #28 Pediculosis (head lice)

  https://www.health.vic.gov.au/infectious-diseases/pediculosis-head-lice

  Head lice are not vectors of infectious disease. […] Pediculus humanus var. capitis is the infective agent. […] Head lice have been associated with humans for 10,000 years. […] Humans are the only reservoir. The lice of other animals are not transmissible to humans. […] Pediculosis is transmitted through direct head-to-head contact with a person with head lice. […] Everyone is susceptible to infection. […] Increasing resistance to the products has been reported.

• #29 What Is Head Lice? Symptoms, Causes, Diagnosis, Treatment, and Prevention

  https://www.everydayhealth.com/lice/

  When other treatments fail, oral ivermectin may be an option. […] In addition to treatment, you can take steps to help prevent reinfestation. […] While one may think a smart way to prevent the spread of lice is to keep children home from school, the American Academy of Pediatrics (AAP) disagrees. […] According to the CDC, head lice are not known to carry disease. […] The overall prevalence of lice is difficult to determine, but its estimated that among children ages 3 to 11, there are between 6 million and 12 million head lice infestations annually in the United States, according to the CDC. […] According to the CDC, Black children in the United States are far less likely to wind up with a lice infestation than children of other ethnic groups. […] Head lice are not the same as body lice or pubic lice.

• #30 Head Lice: Signs, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/10824-head-lice

  Head lice are tiny, parasitic insects that can live in your hair. They bite your skin to suck your blood and attach their eggs (called nits) to your hair, close to your scalp. […] Head lice usually spread from person to person by direct contact. But they may also spread by sharing items that touch your head (like combs, brushes and hats). […] Adult lice lay eggs near your scalp and glue them to your hair. Five to 10 days later, the lice hatch. Over the next nine to 12 days, they’ll bite you several times to take a meal. They’ll grow into adults and lay more eggs, starting the cycle over again. […] Head lice are mostly harmless and don’t carry diseases. But the itching might make your child scratch their head a lot. This can break the skin and lead to bacterial infections. […] With effective treatment, head lice can go away after two to three weeks. Sometimes, you might have to try a different kind of treatment if the first doesn’t work.

• #31 What Diseases Can Be Caused by Lice Infestation | LiceDoctors

  https://www.licedoctors.com/blog/what-diseases-can-be-caused-by-lice-infestation

  Head lice, small parasitic insects that infest the scalp and hair, are about the size of a sesame seed. […] While head lice themselves don’t transmit diseases, their presence can lead to secondary infections due to scratching, including bacterial infections like impetigo. […] Head lice may seem like a minor annoyance, but they have the potential to cause health issues if not addressed promptly. Beyond the persistent itching, a hallmark symptom of head lice, they can pave the way for secondary bacterial infections, skin conditions like impetigo, and, in rare instances, may even harbor uncommon pathogens. […] Although head lice themselves don’t directly transmit diseases, they can lead to secondary bacterial infections. […] While these infections are usually treatable with antibiotics, it’s crucial to address lice infestations promptly to prevent such complications.

• #32

  https://www.nasn.org/nasn-resources/professional-practice-documents/position-statements/ps-head-lice

  Head lice infestation is a common concern worldwide, with both social and medical implications. In the United States it is estimated that 6-12 million head lice infestations occur in children 3-11 years of age each year. […] A head lice infestation is not a communicable disease and no health risks have been associated with head lice. […] Current research indicates that families are over- or incorrectly treating pediculosis, which may be a contributing factor in lice resistance. […] Both AAP and CDC assert that treatment should only be initiated when at least one live louse has been identified. […] Children with nits and live lice continue to be excluded from school by no nit and no live lice policies due to myths and misinformation. […] According to the CDC, The burden of unnecessary absenteeism to the students, families and communities far outweighs the risks associated with head lice.

• #33 Head lice (nits) | Better Health Channel

  https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/head-lice-nits

  Insecticide resistance is common, so you need to check that the lice you comb out are dead. If the insecticide has worked, the lice will be dead within 20 minutes. If the lice are not dead, the treatment has not worked and the lice are resistant to the product and all products containing the same active compound. […] The active compounds in head lice products are: pyrethrins, synthetic pyrethroids (permethrin, bioallethrin), organophosphates (maldison or malathion), herbal, with or without natural (non-chemical) pyrethrins. […] If the initial treatments have failed and live lice are still being removed with the conditioner and comb treatment, see your doctor for a referral to a dermatologist for specialist treatment.

• #34 Head Lice Management Guidelines–UC IPM

  https://ipm.ucanr.edu/home-and-landscape/head-lice/pest-notes/

  The most common sign of head lice infestation is itching on the back of the head or neck, which begins 1 to 4 weeks after the initial infestation. […] Detecting head lice can be time consuming, especially when the number of lice present is low. […] The best way to inspect for head lice is by wet combing the head. […] There are seven critical steps to controlling an infestation of head lice: […] Accurately diagnosing an active head lice infestation—this means finding live head lice on the head. […] Using an effective head louse treatment, with all infested individuals treated at the same time, to prevent re-infestation from others. […] Removing nits from the head by combing with a metal nit comb. […] Removing lice and nits from the household environment by vacuuming, washing, or freezing objects suspected of being infested.

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