Lice
Lice
Lice (pronunciation: /laɪs/) are small, wingless, parasitic insects that infest the hair and skin of various animals, including humans. They are members of the order Phthiraptera, which includes over 5,000 species divided into four suborders.
Etymology
The word "lice" is the plural form of "louse", which comes from the Old English "lūs". The term is used to refer to these insects due to their parasitic nature and the discomfort they cause to their hosts.
Types of Lice
There are three types of lice that infest humans:
- Head lice (Pediculus humanus capitis): These lice infest the hair and scalp causing itching and discomfort. They are most common in children and are spread through close personal contact and by sharing personal belongings.
- Body lice (Pediculus humanus corporis): These lice live in clothing and bedding and move to the body to feed. They are associated with poor sanitation and are spread through close personal contact.
- Pubic lice (Pthirus pubis): Also known as "crabs", these lice infest the hair and skin in the pubic area. They can also infest other areas with coarse hair, such as the armpits, eyelashes, and eyebrows. They are usually spread through sexual contact.
Treatment
Treatment for lice infestations (Pediculosis) involves using over-the-counter or prescription medications that kill lice and their eggs (Nits). In some cases, it may be necessary to manually remove lice and nits from the hair and scalp. It's also important to wash all bedding and clothing that the infested person has used to prevent re-infestation.
Prevention
Prevention of lice infestations involves avoiding close personal contact with an infested person and not sharing personal items like combs, hats, and towels. Regular cleaning of clothing and bedding can also help prevent infestations.
External links
- Medical encyclopedia article on Lice
- Wikipedia's article - Lice
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