Crab louse
Crab Louse
The Crab Louse (Pthirus pubis), also known as the pubic louse, is a parasitic insect that is primarily found in the human pubic area. The term "crab" is derived from the louse's crab-like appearance.
Pronunciation
- IPA: /kræb laʊs/
Etymology
The term "crab louse" is derived from the Old English crabb, meaning "crawl", and the Middle English lous, from the Old English lūs.
Description
Crab lice are tiny insects that infest the hair and skin of the pubic area. They are usually spread through sexual contact. Rarely, infestation can be spread through contact with an infested person's bed linens, towels, or clothes. A common misconception is that infestation can be spread in a public toilet. However, this is unlikely since lice cannot live long away from a warm human body. Also, lice do not have feet designed to walk or hold onto smooth surfaces such as toilet seats.
Symptoms
Infestation with crab lice can cause itching due to an allergic reaction to louse saliva. The itching can lead to scratching, which can cause sores and secondary infections. In some cases, a crab louse infestation may cause fever, fatigue, and irritability.
Treatment
Treatment for crab louse infestation typically involves using a lice-killing lotion or shampoo. The most commonly used treatments contain permethrin or pyrethrin. In some cases, a doctor may prescribe a stronger treatment. It's also important to wash all clothing and bedding that the infested person used during the two days before treatment.
Related Terms
External links
- Medical encyclopedia article on Crab louse
- Wikipedia's article - Crab louse
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