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Lice infestation in general is known as pediculosis, and occurs in many mammalian and bird species. [54] Lice infesting other host species are not the same organism as that which causes head lice infestations in humans, nor do the three louse species which infest humans infest any other host species. [citation needed]
From each egg or "nit" may hatch one nymph that will grow and develop to the adult louse. Lice feed on blood once or more often each day by piercing the skin with their tiny needle-like mouthparts. While feeding they excrete saliva, which irritates the skin and causes itching. [8] Lice cannot burrow into the skin. [citation needed]
Head lice are grey in general, but their precise color varies according to the environment in which they were raised. [9] After feeding, consumed blood causes the louse body to take on a reddish color. [9]
Head lice feed on blood several times each day and tend to reside close to your scalp, which explains the itchiness and why it’s sometimes so difficult to tell that you have head lice. Unlike ...
Louse (pl.: lice) is the common name for any member of the clade Phthiraptera, which contains nearly 5,000 species of wingless parasitic insects.Phthiraptera has variously been recognized as an order, infraorder, or a parvorder, as a result of developments in phylogenetic research.
Ticks and lice form another large group of invertebrate vectors. The bacterium Borrelia burgdorferi, which causes Lyme Disease, is transmitted by ticks and members of the bacterial genus Rickettsia are transmitted by lice. For example, the human body louse transmits the bacterium Rickettsia prowazekii which causes epidemic typhus.
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