HL meaning in Medical ?

Answer:

What is Head Lice mean?

The head louse (Pediculus humanus capitis) is an obligate ectoparasite of humans.

Head lice are wingless insects that spend their entire lives on the human scalp and feeding exclusively on human blood. Humans are the only known hosts of this specific parasite, while chimpanzees host a closely related species, Pediculus schaeffi. Other species of lice infest most orders of mammals and all orders of birds.

Lice differ from other hematophagic ectoparasites such as fleas in spending their entire lifecycle on a host. Head lice cannot fly, and their short, stumpy legs render them incapable of jumping, or even walking efficiently on flat surfaces.

The non-disease-carrying head louse differs from the related disease-carrying body louse (Pediculus humanus humanus) in preferring to attach eggs to scalp hair rather than to clothing. The two subspecies are morphologically almost identical, but do not normally interbreed. From genetic studies, they are thought to have diverged as subspecies about 30,000–110,000 years ago, when many humans began to wear a significant amount of clothing. A much more distantly related species of hair-clinging louse, the pubic or crab louse (Pthirus pubis), also infests humans. It is morphologically different from the other two species and is much closer in appearance to the lice which infest other primates. Louse infestation of the body is known as pediculosis, pediculosis capitis for head lice, pediculosis corporis for body lice, and phthiriasis for pubic lice.

Head lice (especially in children) have been, and still are, subject to various eradication campaigns. Unlike body lice, head lice are not the vectors of any known diseases, however rare secondary infections can result from scratching at bites. Head louse infestations may be beneficial in helping to foster a natural immune response against lice which helps humans in defense against the far more dangerous body louse, which is capable of transmitting dangerous diseases.

reference

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Host Language	Academic & Science
Hectoliter	Academic & Science
Hall of Languages	Academic & Science
Hard Limiting	Business
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Home Loan	Business
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Heavy Lift	Business
Heilmann and Lieb (non-crossing Rule)	Chemistry
Half Life	Chemistry
Heavy Liquid	Chemistry
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Higher Level	Community
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Hashed List	Computing
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Hot Launch	General
High Loft	General
High Lord	General
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Hup Leck	General
Hes Lying	General
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Hard Labour	General
Hot Load	General
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Harlan Leonard	General
Hidden Layer	General
Henry Louis	General
Hiram Lewis	General
High Low	General
Horizontal Landing	Governmental
the House of Lords	Governmental
House of Lords	Governmental
HochLicht	International
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Haliaetus Leucocephalus	Medical
Hearing Loss	Medical
Heart and Lungs	Medical
Hair Loss	Medical
Hepatic Lipase	Medical
Hepatic Lipidosis	Medical
Hearing Level	Medical
Hyperpigmented Lesions	Medical
Head Lice	Medical
Health Level	Medical
Humerus Length	Medical
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Heat Loss	Physics Related
Holland	Regional
Heart Land	Regional
High Level	Space Science
Hinge Line	Space Science
Hydrogen Line	Space Science
Hardline	Space Science
Heel Line	Space Science
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Head Linesman	Sports