a little boy scratches due to lice infestation

Pediculosis capitis and nits, commonly known as head lice infestation is the infection of the head scalp and hair by the Pediculus humanus capitis parasite. The head louse can live on people’s eyelashes and eyebrows as well.

During the first infection, the itching may not begin for up to six weeks. When a person is infected again, itch may begin much sooner than the first time. Head lice have to feed on human blood several times a day; this is why they live so close to the scalp.

According to the Journal of Parasitology, head lice originally appeared in North America, but spread across the world, including Europe and Australia. According to reliable sources, there are more than three thousand species of lice.

Humans host only two species: Pediculus humanus (head lice) and Phthirus pubis (pubic lice). Head lice group includes two morphotypes, head lice, and body lice. Presumably, the head louse is the ancestor of body louse that originated from the head and spread to the body when humans began to wear clothes.

Most treatments to kill off head lice need to be used twice, but seven to 10 days apart. It is recommended to comb a wet hair with a fine-toothed comb to remove nits. Some lice are resistant to common lice treatments that include pyrethrins and permethrin. This is when stronger prescription drugs are needed, such as spinosad or ivermectin.

  1. September 29, 2018

    Head lice sometimes go away on their own because there are not enough insects to maintain the infestation, or they may persist for an indefinite period without treatment. With proper treatment, the infestation usually goes away within about two weeks.

  2. September 30, 2018

    Lice infestation is a skin infestation by tiny wingless insects. They spread most frequently through close person-to-person contact.People with lice usually have severe itching. Lice and their eggs can be found by looking through hair on the head or other parts of the body. Treatment of lice usually involves shampoos, creams, or lotions and sometimes decontamination of clothing and bedding.Some people require an antiparasitic drug taken by mouth.

  3. October 11, 2018

    Great reading with lots of helpful information. IMHO, it could even cause you emotionally. I even hear about Post-traumatic Lice Disorder. I’ve noticed my cousin been so affected by it that started wearing hoodie and even washing sheet again and again. Thank you so much and keep posting things like this.

Write a comment:

*

Your email address will not be published.

The National Drug and Poison Information Center 1-800-222-1222

Copyright @ 2012-2018 All Rights Reserved. My Pharmacy Visit does not provide medical advice, diagnosis, or treatment.

Skip to toolbar