Nits and head lice facts

  • Head lice are small insects that do not fly or jump they crawl

  • Head lice do not cause diseases but can cause secondary diseases like impetigo by bites getting infected.

  • Only a third of people feel itchy from bites. This is because they are allergic to the saliva that lice inject into the skin when feeding on human blood to keep it fluid

  • Head lice do not urinated or defecate they perspire to release fluids

  • The little black bits that are found in the hair are most likely when the young head lice shed their skin when moulting. (Which they do three times before maturity).

  • Female head lice are the lice that transfer from head to head

  • It is called positive phototaxis which is when insect are attracted to light

  • The female louse mates, feeds, lays an egg, goes down the hair shaft, holding on with one claw and holding another claw out ready to climb onto another host when contact is made with another head of hair and lay however many eggs they have left.

  • The male louse stays close to the scalp, mating and feeding

  • Head lice only mate once

  • The female louse can lay up to a hundred eggs in their lifetime.

  • The egg takes approximately 7 to 10 days to hatch

  • The nymph (baby louse) moults three times over seven to ten days and then


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Hemel Hempstead

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