First the Facts
- Pubic lice are common in the UK.
- Anyone can get pubic lice; they have nothing to do with poor bodily hygiene and are not always spread through sexual contact.
- It is possible to have pubic lice without any symptoms but still spread them to other people.
- To get rid of pubic lice, proper treatment is needed. Shaving the hair is not effective.
What Are Pubic Lice?
- Pubic lice are sometimes referred to as ‘crabs’.
- They are small (about 2 mm long) brown insects that feed on human blood.
- Despite being called ‘pubic lice’, they can actually live in any coarse human hair such as pubic, underarm, chest and facial hair but they do not live on head hair.
- Pubic lice lay eggs in the hair which take about 6 days to hatch.
- They can only move by crawling from one person’s hair to another, they cannot jump.
How Are Pubic Lice Transmitted?
- Pubic lice are spread by close contact between humans. This does not have to be sexual contact but most commonly involves bodily contact with the affected area.
- Sometimes pubic lice can be spread by sharing bedding or towels with somebody who is infected, but lice do not survive for very long away from the body.
How Will I Know If I Have Pubic Lice?
- It is common to have no symptoms of pubic lice until weeks after infestation, or even no symptoms at all.
- Common symptoms are itching or inflammation in the affected area. Itching may be worst at night.
- You might also see signs of pubic lice such as:
- Brown eggs on hair roots.
- Blue spots and specs of blood on the skin.
- Dark brown powder in underwear (lice droppings).
- It is difficult to see the lice themselves although you may see them move.
How Can I Protect Myself?
- Although using condoms during sex is recommended, this will not stop the spread of pubic lice.
- The best way to protected yourself is to see a healthcare professional if you think that you or anybody you have been in close personal contact with may have pubic lice.
- If you are treated for pubic lice then this will prevent you from passing it on to others.
Can I Get a Test for Pubic Lice?
Usually a doctor or nurse will have a close look at the affected area, sometimes with a fine comb and magnifying glass.
- You should get checked if:
- A partner or another close contact tells you they have pubic lice.
- You have any of the symptoms listed above.
- You can get checked at:
- A sexual health or genitourinary medicine clinic
- Some young person’s / contraception clinics
- GP surgeries
If you have acquired pubic lice from a sexual contact, it is advisable to get screened for other sexually transmitted infections (STIs).
What Happens If I Have Pubic Lice?
- The treatment for pubic lice is with permethrin cream or malathion 0.5% solution. You can buy this over the counter from a pharmacy.
- Your doctor, nurse or pharmacist will tell you how to use the treatment, which is applied to the whole body and washed off after 12 hours.
- You will need to repeat your treatment after 7 days to ensure it is properly effective.
- You do not need to shave the hair affected.
- Machine wash clothing, bedding and towels at 50 degrees or above. Mattresses should be vacuumed.
- You should tell your partner or any other personal contacts from the last three months who may need treatment even if they don’t have symptoms.
- You should avoid all close bodily contact including sex (vaginal, anal or oral), until both you and your partner have completed treatment to prevent re-infection.
- Itching may persist for a few days or weeks even after successful treatment.
What If I Don’t Get Treated for Pubic Lice?
- Pubic lice will not go away without treatment.
- If your sexual and household contacts do not receive proper treatment, it is possible for you to get re-infected with lice.
Written by: Dr Alice Llambias-Maw, Dr Nikki Kersey and Dr Paula Briggs
Last updated: January 2021
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