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Detecting head lice

Detecting head lice
How can you tell if your child has head lice? What is the best way of dealing with these little pests? We take a look at head lice detection.
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It is difficult to spot head lice with the naked eye, so try vigorous hair brushing over a sheet of white paper, which will dislodge lice and nymphs (immature lice) and indicate the need for action.

Check your child's head every week. A child with head lice will almost certainly have them in the hair behind the ears, so this is the first place to look!

What to do if you find head lice

Don't be embarrassed! Anyone can catch head lice – but do let other parents know so that they can check their children too.

Don't panic! Ask your pharmacist for an appropriate treatment and apply it exactly as directed. Most treatments need to be applied twice, once to kill the adult lice, and then again about a week later to kill any lice that have hatched since treatment.* Treat everyone in the family who has head lice at the same time to prevent re-infection.

*New to the UK, NYDA® only needs one application to kill both head lice and eggs

What to use? Doctors recommend treatments with a physical mode of action (rather than insecticide or pesticide-based treatments). Products with a high dimeticone content – dimeticone is a type of silicone which is non-toxic – kill lice by suffocating them.

When comparing the price of treatments, a product that only needs one application can be better value than cheaper products that need to be applied twice.

What about bug-busting? Wet combing can be used to remove lice without using chemical treatments, but to be successful must be carried out methodically and repeatedly – every two to four days for at least 14 days. Done properly it is time-consuming, so try nit-combing while your child sits down with a book, TV programme or game.

This table may help you choose from the many head lice treatments available. Avoid products with an alcohol base for children with asthma.

 

Product

Active ingredient

Leave on time

Repeat Treatment

Comment*

Derbac-M

Malathion

Organophosphate insecticide

12 hours

 

After 7 days

Recommended for people who have not previously used insecticide

Full Marks Liquid

Mousse*

Lotion**

Phenothrin

 

Pyrethroid-based insecticide

12 hours

 

*30 minutes

**2 hours

After 7 days

 

Recommended for people who have not previously used insecticide

*Contact time is less than the recommended 8-12 hours

Full Marks Solution

Cyclomethicone

Silicone polymer

10 minutes

After 7 days

Contact time is less than the recommended 8-12 hours

Hedrin

Dimeticone 4%

Synthetic silicone, non-chemical

8 hours or overnight

After 7 days

Ensure sufficient product is used to saturate hair

Lyclear SprayAway

Coconut oil/aniseed oil

Non-chemical

15 minutes

After 7 days

Contact time is less than the recommended 8-12 hours

Lyclear

Permethrin

Pyrethroid-based insecticide

10 minutes

After 7 days

Not recommended.

NYDA

Dimeticone 92%

Synthetic silicone, non-chemical

8 hours or overnight

Not necessary if used as directed

Effective against head lice AND eggs

*Recommendations from ‘Clinical Knowledge Summaries', official prescribing information for GPs from the NHS Institute for Innovation and Improvement