Dec 03, · Head lice are small, wingless, blood-sucking insects. They live in the hair on your head and feed off the blood from your scalp. A louse (a single adult) is . May 11, · Head lice can cause an itchy scalp, but so can other skin conditions, such as dandruff, eczema, or even allergies to shampoo and other hair products. .
Head lice feed on blood from the scalp. The female louse lays eggs nits that stick ot hair shafts. Head lice are tiny insects that feed on blood from the human scalp. An infestation of head lice most often affects children and usually results from the direct transfer of lice from the hair of one person to the hair of another.
A head-lice infestation isn't a sign of poor personal hygiene or an unclean living environment. Head lice don't carry bacterial or viral infectious diseases. Over-the-counter and prescription medications are available to what does lice do to your scalp head lice. Follow treatment instructions carefully to rid your scalp and hair of lice and their eggs.
A number of home or natural remedies are yor used to treat how to not eat after dinner infestations, but there is little to no clinical evidence of their effectiveness. See your voes before you begin treatment if you suspect that how to create a cmd file windows 7 or your child has a head-lice infestation.
Studies show that many children have been treated for head lice with over-the-counter medications or home remedies when they don't have an active head-lice infestation. A head louse is a doo or grayish insect about the size of a strawberry seed. It feeds on human blood from a person's scalp. Head lice crawl, but they can't jump or fly. Transmission of a head louse from one person to another is often by direct head-to-head contact, often within a family or among children who have close contact at school or play.
Indirect transmission is uncommon, but lice may spread from one person to another by items such as:. Indirect transfer could also occur among items of clothing stored together. For example, hats or scarves hung on the same hook or stored in the same school locker could serve as vehicles for transmitting lice.
Because head lice are spread primarily by direct head-to-head contact, the risk of transmission is greatest among younger people who play or go to school together. In the United States, cases of head lice most often occur in children in preschool through elementary school. If your child scratches an itchy scalp from a head-lice infestation, ljce is possible for the skin to break and develop an infection. It's difficult to prevent the spread of head lice among children in child care dods and schools because there is so much close contact.
The chance of indirect transmission from personal items is slight. However, to help prevent a head-lice infestation, you may instruct your child to:. A worry about head-lice transmission is not considered a good reason to avoid sharing protective headgear for sports and bicycling when sharing is necessary. Mayo Clinic does not endorse companies or products.
Advertising revenue supports our not-for-profit mission. Don't delay your care at Mayo Clinic Schedule your appointment now for safe in-person care.
This content does not have an English version. This content does not have an Arabic version. Overview Head lice Open pop-up dialog box Close. Head lice Head lice feed on dows from the scalp. Request an Appointment at Mayo Clinic. More Information Head lice prevention. Share on: Facebook Twitter. Show references Head lice: Frequently asked questions. Centers for Disease Control and Prevention. Accessed Feb. Kimberlin DW, et al.
Pediculosis capitis. In: Red Book Online. American Academy of Pediatrics; James WD, et al. Elsevier; Dinulos JGH. Infestations and bites. In: Habif's Clinical Dermatology. Head lice: Treatment frequently asked questions. Centers for Disease Control and Protection. Mayo Clinic; Gunning K, et al.
Lice and scabies: Treatment update. American Family Physician. Goldstein AO, et al. Head lice: Diagnosis. Natural Medicines. Ylang ylang oil. Head lice: Prevention and control. Head lice: Treatment. AAP updates treatment for head lice. American Academy of Pediatrics.
Related Head lice Head lice Head lice prevention Super lice: Should I be worried about these treatment-resistant pests? Show more related content. Pritt, part 2: Scalp explorers Oct. Mayo Clinic Marketplace Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.
Apr 03, · Head lice are tiny parasites that live on the human head and feed on blood from the scalp. They are common in children and spread as a result of Author: Beth Sissons.
Head lice occur on the scalp and are easiest to see at the nape of the neck and over the ears. Small nits eggs resembling tiny pussy willow buds about the size of dandruff flakes are visible on hair shafts.
Lice are tiny, wingless, parasitic insects that feed on human blood. Lice are easily spread — especially by schoolchildren — through close personal contact and by sharing belongings. People can have good personal hygiene and still get lice.
Unless treated properly, this condition can become a recurring problem. Head lice feed on blood from the scalp. The female louse lays eggs nits that stick to hair shafts. Lice feed on human blood and can infest the human head, body and pubic area. The female louse produces a sticky substance that firmly attaches each egg to the base of a hair shaft. Eggs hatch in six to nine days. You can get lice by coming into contact with either lice or their eggs. Lice can't jump or fly.
They spread through:. It's difficult to prevent the spread of head lice among children in child care and school settings. There's so much close contact among children and their belongings that lice can spread easily. It's no reflection on your hygiene habits or those of your children, and it's not a failure on your part as a parent if your child gets head lice. Some over-the-counter products claim to repel lice, but more scientific research is needed to prove their safety and effectiveness.
A number of small studies have shown that ingredients in some of these products — mostly plant oils such as coconut, olive, rosemary and tea tree — may work to repel lice.
However, these products are classified as "natural" so they aren't regulated by the Food and Drug Administration FDA , and their safety and effectiveness haven't been tested to FDA standards. Until more research proves the effectiveness of head lice prevention products, the best approach is simply to take thorough steps to get rid of the lice — and their eggs — so that you don't have more lice to deal with. However, it's not realistic to expect that you and your child can eliminate all the types of contact that may result in the spread of lice.
Your child may have nits in his or her hair but not necessarily develop a case of head lice. Some nits are empty eggs. Nits that are farther away from the scalp are probably from an old infestation, but should be removed to prevent a recurrence. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. Don't delay your care at Mayo Clinic Schedule your appointment now for safe in-person care. This content does not have an English version.
This content does not have an Arabic version. Overview Head lice Open pop-up dialog box Close. Head lice Head lice occur on the scalp and are easiest to see at the nape of the neck and over the ears. Head lice Open pop-up dialog box Close. Head lice Head lice feed on blood from the scalp. Request an Appointment at Mayo Clinic. Share on: Facebook Twitter. Show references Devore CD, et al. Head lice. Mayo Clinic; Bennett JE, et al. Lice Pediculosis.
Elsevier; Accessed March 21, Goldstein AO, et al. Pediculosis capitis. Head lice: Treatment frequently asked questions. Centers for Disease Control and Prevention. Accessed March, 21, Gunning K, et al. Lice and scabies: Treatment update. American Family Physician. Imboden A. Effective treatments for head lice. The Nurse Practitioner. Mayo Clinic Marketplace Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.