Introduction

Head Lice

Head lice and nits are very common in young children. They don't have anything to do with dirty hair and are usually picked up from head-to-head contact.

Check if it's head lice

Head lice are small insects, up to 3mm long, and can be difficult to spot. Head lice eggs (nits) are yellow, brown or white (empty shells) and are attached to the hair.

Head lice sometimes can make your head feel:

  • itchy
  • like something is moving in your hair

The only way to be sure someone has head lice is by finding live lice or eggs.

You can do this by combing their hair with a special fine-toothed comb (detection comb). You can buy these online or at pharmacies.

How to get rid of head lice

Important - You can treat head lice without seeing a GP.

Treat head lice as soon as you spot them. You should check everyone in the house and treat them on the same day if they have head lice.

There's no need to keep your child off school if they have head lice.

Wet combing

Lice and nits can be removed by wet combing. This method should be tried first.

You can buy a special fine-toothed comb (detection comb) online or from pharmacies to remove head lice and nits.

There will be instructions on the pack to follow, but typically you:

  • use the comb on wet or dry hair - although it usually works best on wet hair with conditioner
  • comb the whole head of hair, from the roots to the ends
  • repeat every few days for 2 weeks

It usually takes about 10 minutes to comb short hair, and 20 to 30 minutes for long, frizzy or curly hair.

Medicated lotions or sprays

Ask your pharmacist for advice if you have tried wet combing for 2 weeks, but your child still has head lice or nits.

They may recommend using medicated lotions and sprays. These kill head lice in all types of hair, and you can buy them from pharmacies, supermarkets or online.

Head lice should die within a day. Lotions and sprays come with a comb to remove dead lice and eggs.

Some treatments need to be repeated after a week to kill any newly hatched lice.

Check the pack to see if they're OK for you or your child and how to use them.

If lotions or sprays don't work, speak to your pharmacist about other treatments.

Some treatments aren't recommended because they're unlikely to work.

For example:

  • products containing permethrin
  • head lice "repellents"
  • electric combs for head lice
  • tree and plant oil treatments, such as tea tree oil, eucalyptus oil and lavendar oil herbal remedies

You can't prevent head lice

There's nothing you can do to prevent head lice. You can reduce the risk of lice spreading by avoiding head-to-head contact.

Don't use medicated lotions and sprays to prevent head lice. This can irritate the scalp.

There's no need for children to stay off school, or to wash laundry on a hot wash.

Read medical detail about head lice.

 

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Selected links

Internal Links

Head Lice Symptom Checker

External links

Public Health Wales - Head lice

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Leaflets

Welsh Government Leaflets

Head Lice Factsheet pdf

"The Facts About Head Lice" booklet pdf

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The information on this page has been adapted by NHS Wales from original content supplied by NHS Choices.
Last Updated: 26/10/2018 11:06:03