Head Lice Flashcards
What are head lice?
Head lice, also known as pediculosis capitis or ‘nits’, are parasitic insects that live on and among the hair of the scalp of humans.
What do head lice feed on?
Head lice feed on human blood.
What do head lice eggs look like?
The eggs are grey or brown, about the size of a pinhead, and are glued to the hair close to the scalp.
How long does it take for head lice eggs to hatch?
Head lice eggs hatch in 7 to 10 days.
What are nits?
Nits are the empty egg shells of head lice, which are white and shiny and found further along the hair shaft as they grow out.
How are head lice spread?
Head lice are spread by direct head-to-head contact.
Why are head lice more common in children?
Head lice are more common in children because they play closely together.
Can head lice jump, fly, or swim?
No, head lice cannot jump, fly, or swim.
When do symptoms of head lice appear?
Symptoms such as itching and scratching on the scalp occur 2 to 3 weeks after infection.
What is the method for diagnosing head lice?
Diagnosis is done through fine-toothed combing of wet or dry hair.
When is treatment for head lice indicated?
Treatment is only indicated if living lice are found.
What are some treatment options for head lice?
Treatment options include malathion, wet combing, dimeticone, isopropyl myristate, and cyclomethicone.
Do household contacts need to be treated for head lice?
Household contacts do not need to be treated unless they are also affected.
Is school exclusion advised for children with head lice?
No, school exclusion is not advised for children with head lice.
