What kind of infection is pediculosis?

Pediculosis is an infestation of the hairy parts of the body or clothing with the eggs, larvae or adults of lice. The crawling stages of this insect feed on human blood, which can result in severe itching. Head lice are usually located on the scalp, crab lice in the pubic area and body lice along seams of clothing.

Is pediculosis viral or bacterial?

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.

Is pediculosis a parasite?

Pediculosis capitis is a ubiquitous parasitic skin disease caused by Pediculus humanus capitis. Head lice are highly specialised parasites which can propagate only on human scalp and hair. Transmission occurs by direct head-to-head contact.

Is pediculosis a virus?

Pediculosis is an infestation of lice from the sub-order Anoplura, family Pediculidae. Accordingly, the infestation with head lice is named pediculosis capitis, while this with body lice, pediculosis corporis.

Pediculus humanus capitis (♀)
Specialty Infectious disease

Is pediculosis a bacteria?

Background: Pediculus humanus capitis (head lice) belongs to the order Anoplura, which are blood-feeding ectoparasites that live on human hair. Within these insects reside symbiotic bacteria that enable the insect to flourish on dietary sources of limited nutritional value.

What are the 3 types of pediculosis?

The 3 major lice that infest humans are Pediculus humanus capitis (head louse), Pthirus pubis (crab louse), and Pediculus humanus humanus (body louse).

Is pediculosis a reportable disease?

Head lice, also known as pediculosis, isn’t a reportable disease under the Health Promotion and Protection Act.

What is pediculosis diagnosis?

The diagnosis of pediculosis is best made by finding a live nymph or adult louse on the scalp or in the hair of a person. Finding numerous nits within 6 mm of the scalp is highly suggestive of active infestation. Finding nits only more than 6 mm from the scalp is only indicative of previous infestation.

Is pediculosis communicable or noncommunicable?

A head lice infestation can be highly contagious. The adult female louse lays seven to ten eggs per day near the scalp. Head lice cannot jump or fly, but they can crawl, and they do not carry bacterial or viral infectious diseases. A head lice infestation isn’t a sign of poor personal hygiene.

What is pediculosis caused by?

Head lice (pediculosis capitis) is a common, highly contagious infection that often occurs in nurseries, day care centers, and schools. It is caused by infestation with the human head louse, Pediculus humanus capitis, and it is usually very itchy. Lice are very small insects that feed on human blood.

What is pediculosis corporis?

pediculosis corporis, also known as body lice, is an infestation of the body due to the ectoparasite, Pediculus humanus corporis (also called Pediculus humanus humanus) (3,4) body lice mostly affects homeless populations or individuals living in overcrowded situations, such as shelters, refugee camps, and jails.

What are the complications of pediculosis?


  • Pruritic rash on the back of the neck and behind the ears, caused by a hypersensitivity reaction to louse faeces.
  • Excoriation, skin infection and impetigo may occasionally occur.
  • Loss of sleep caused by continuous itching is occasionally a problem.
  • Anxiety and distress for children and parents.

How do you get pediculosis corporis?

Pediculosis corporis is a skin condition caused by body lice (Pediculus humanus corporis) that feed on human blood. These lice lay their eggs in the seams of clothing and bedding while moving to human skin to feed.

What organism is louse?

Louse (PL: lice) is the common name for any member of the clade Phthiraptera, which contains nearly 5,000 species of wingless parasitic insect.

What is the difference between pediculosis and scabies?

Lice are small insects that live on the skin. They are often connected to hair on the scalp or in the pubic area. When you have lice, it is called pediculosis. Scabies is a condition caused by mites, which are tiny, insect-like animals that dig under the skin.

Are head lice zoonotic?

Nearly every insect-borne and tick-borne disease is a zoonosis. A disease that is a zoonosis can infect humans, but exists in nature in a non-human animal reservoir. Louse-borne diseases differ, however, in that humans are the only reservoir hosts, with one apparent exception (see below).

Is lice plural or singular?

A louse is a tiny insect that lives on the skin of animals and people. If you find a louse in your hair, you’ll have to treat your scalp to get rid of any of its friends that might still be lurking there. Since they tend to travel in groups, the plural form of louse, lice, is much more common than the singular.

What are the precautions for pediculosis?

Prevention &amp, Control

  • 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.

What is the incubation period of pediculosis?

Incubation period of Pediculus humanus

The eggs are known as nits and hatch in 7–10 days. There are three nymphal forms that each last 1–8 days. The female lays the first egg 1 or 2 days after mating and can lay approximately 3–10 eggs per day for the next 16 days.

Where is every case of pediculosis reported?

Adult lice or eggs that are “glued” to the hair shaft are most commonly apparent behind the ears and near the nape of the neck (2). Head lice may also be found on the eyebrows and eyelashes of people (4).

What disease is caused by Pediculus humanus?

Head lice (pediculosis capitis) and body lice (pediculosis corporis) are caused by the human louse Pediculus humanus, a light-gray insect, 3-4 mm long, that feeds on blood.

How did body lice evolve?

Through genetic analysis, Reed and colleagues determined that more than 3 million years ago, the human pubic louse originated from gorilla lice, where it adapted to grab onto large hairs spread farther apart. This finding means that humans and gorillas must have lived in close proximity during this time period.

Is head lice infectious or noninfectious?

Head lice are not known to transmit any disease and therefore are not considered a health hazard. Head lice infestations can be asymptomatic, particularly with a first infestation or when an infestation is light.

Can head lice transfer to pubic hair?

Lice found on the head generally are head lice, not pubic lice. Animals do not get or spread pubic lice.

Can lice get into ears?

Head lice infect the scalp and hair and can be seen at the nape of the neck and over the ears.

Can head lice cause swollen lymph nodes?

Nits are firmly attached to the hair, commonly behind ears and at or near the nape of the neck. Excessive scratching, especially behind and around ears and at the nape of the neck, may lead to open sores and a bacterial infection that also may cause swollen lymph nodes.

What does pediculosis look like?

Appearance. Head lice have six legs and are usually grayish-white or tan. However, they can camouflage, so they may appear darker or lighter to match different hair colors.

What is the primary treatment of choice of pediculosis corporis?

First-line pharmacologic treatment of pediculosis is permethrin 1% lotion or shampoo. Multiple novel treatments have shown limited evidence of effectiveness superior to permethrin. Wet combing is an effective nonpharmacologic treatment option.

Which laboratory test will confirm a diagnosis of head lice pediculosis?

001). Conclusions Wet combing is a very accurate method to diagnose active head lice infestation. Visual inspection is the method of choice, if one aims to determine the frequency of carriers of eggs or nits. Pediculosis capitis (head lice infestation) is one of the most common infections in childhood.

What diseases if any are spread by head lice such as Pediculus humanus capitis?

Several of the infectious diseases associated with human lice are life-threatening, including epidemic typhus, relapsing fever, and trench fever, which are caused by Rickettsia prowazekii, Borrelia recurrentis, and Bartonella quintana, respectively.

What is the root of pediculosis?

pediculosis (n.)

lice infestation,” 1809, with -osis + Latin pediculus, diminutive of pedis “a louse,” said in some sources to be akin to pedere “to break wind” (see petard) on notion of “foul-smelling insect” [Watkins].

How long can you have lice without knowing?

You may not notice any symptoms for up to six weeks the first time you get lice.

How long does lice live without a host?

Off the host, adult head lice can live about two to four days at 74 degrees Fahrenheit (F) and one to two days at 86 degrees. Nits will remain alive off the host for up to 10 days, they will not hatch at or below room temperature (68 degrees F).

What is the life cycle of body lice?

The life cycle of the body louse has three stages: egg, nymph, and adult. Eggs: Nits are body lice eggs. They are hard to see and are often confused for dandruff. Nits are laid by the adult female and are cemented at the base of the hair shaft nearest the skin.

What is the scientific name for crabs STD?

“Crabs” is the common term for lice found in the pubic hair of humans. Crabs is a parasite infection medically known as Pediculosis pubis or pubic lice. Barely the size of a pinhead, lice are organisms that live only with the help of another organism, called a host.

What is metamorphosis in lice?

Metamorphosis in the lice is simple, the nymphs molting three times, each of the three stages between molts (instars) becoming larger and more like the adult. … In the human louse the egg stage may last from six to 14 days and the stages from hatching to adult, eight to 16 days.

Is louse complete metamorphosis?

The incomplete metamorphosis occurs in termites, lice, true bugs, grasshoppers, praying mantis, crickets, and cockroaches. Both complete and incomplete metamorphosis are types of growth of insects.

Is a louse an arachnid?

Head lice are arachnids (a type of spider), not insects.

Which drug is used to treat both scabies and pediculosis?

Generalized crusted scabies is best treated with oral ivermectin. Pediculosis and scabies are closely related skin conditions caused by arthropods.

How infectious is scabies?

Scabies mites are very contagious. They often spread from person to person while they are sleeping in the same bed, or during other close contact. Scabies should be treated quickly to keep the mites from spreading. It may take 2 to 6 weeks to develop symptoms of scabies after contact with an infected person.

Does Nix work for scabies?

Nix is an OTC version of 1 percent permethrin. It’s most often used for head lice. Most doctors recommend using permethrin of at least 5 percent for the treatment of scabies in order to kill both the mites and their eggs. Since scabies spreads quickly, treating with Nix may not kill the infestation.

Is Pediculosis a parasite?

Pediculosis capitis is a ubiquitous parasitic skin disease caused by Pediculus humanus capitis. Head lice are highly specialised parasites which can propagate only on human scalp and hair. Transmission occurs by direct head-to-head contact.

Why are there 3 types of lice?

We’ve got three different kinds of lice because, unlike our closest relatives, we aren’t covered head-to-toe in a furry coat. Each louse species is adapted to its particular niche in our body, by working out their evolutionary history, we can learn something about when those niches appeared.

Can a single louse reproduce?

As long as there’s a food source readily available, an adult louse can live for as long as 30 days on a human. However, lice can continue to multiply. Female lice lay up to six eggs each day. Although lice can spread on inanimate objects, they won’t spread between you and your pets.