What are pubic lice (crabs) and genital scabies?

Pubic lice (also sometimes called crabs) are parasite insects that infest the pubic hair. Genital scabies are mites that infest the genital skin. They are both a type of sexually transmissible infection (STI).

How do you get pubic lice and genital scabies?

Pubic lice and genital scabies are mainly passed on during sexual skin-to-skin contact with someone who has pubic lice or genital scabies. Sexual skin-to-skin contact may be during genital-to-genital contact, vaginal, anal or oral sex or sharing sex toys.

Pubic lice and genital scabies can affect anyone who is sexually active. Pubic lice and genital scabies can survive away from the body for up to 3 days, so it is possible they may be passed on from sharing items such as bed linen, clothing and towels.

How do I know if I have pubic lice and genital scabies?

Most people with pubic lice and genital scabies experience itchiness in the affected genital area. With scabies, this is especially at night or after a hot bath or shower.

Some people may have symptoms such as:

  • a rash, bumps or redness on the genital skin (which is more likely with scabies as they burrow into the skin to lay eggs)
  • fever
  • sleep disturbance, tiredness.

If you have pubic lice you may notice lice, eggs or nits (empty eggshell) in the pubic hair or underwear. Lice eggs and nits usually strongly attach to the base of hairs (close to the skin).

What does a test involve?

Pubic lice and genital scabies are diagnosed by a doctor or nurse, who will examine the affected area and any rash, bumps or redness you have noticed.

If the doctor thinks you have genital scabies, they will take a skin scraping (a small sample of skin taken with a fine needle) to confirm.

You may choose to test for other STIs or BBVs at the same time as testing for pubic lice and genital scabies.

Family Planning Victoria (FPV) provides expert, confidential STI and BBV testing to Victorians. For more information on FPV clinical services, see our clinics or you can book an appointment online.

How are pubic lice and genital scabies treated?

Pubic lice and genital scabies are treated with a cream or lotion to the affected area. Treatment may need to be repeated after 1 week.

In addition, it may be recommended you:

  • Avoid close body contact including sexual contact for 7 days after you (and your current sexual partner/s) have finished treatment and symptoms have resolved.
  • Remove and wash clothes, towels and bed linen. Or store in a plastic bag for 1 week while pubic lice (crabs) and genital scabies die.
  • Use other medications to ease or soothe itching (e.g. antihistamine oral medication, calamine lotion and topical steroid creams).

Where do I get treatment?

Your doctor or nurse will give you the pubic lice (crabs) and genital scabies treatments or you can buy them over the counter at a pharmacy without a script.

What if I do not get treated?

If untreated, pubic lice (crabs) and genital scabies can cause a persistent itch, which can lead to sores and bacterial skin infection.

Breaks in skin due to scratching or infection can increase the risk of getting other sexually transmissible infections.

Will pubic lice and genital scabies come back?

Pubic lice and genital scabies are cured by effective treatment, but you do not develop any immunity. It is possible to get another infection.

To avoid being reinfected with pubic lice or genital scabies, it is recommended you avoid sexual contact or use barrier protection (external condoms, internal condoms or dental dams) for 7 days after you (and your current sexual partners) have finished treatment.

The symptoms of genital scabies may persist for 2 – 3 weeks after treatment as your immune system responds to the scabies. If symptoms persist for longer, you can see your doctor or nurse.

Safer sex, including regular STI (and BBV) testing is the best way to lower your risk of getting pubic lice (crabs) and genital scabies.

Do I need to let my sexual partners know I have pubic lice or genital scabies?

If you have been diagnosed with pubic lice or genital scabies, it is recommended you let your sexual partner/s know so they can make informed decisions about ways to lower the risk of passing it on and be tested and treated. If your current sexual partner/s are not treated, you could end up with pubic lice (crabs) and/or genital scabies again.

There are some great websites to support you informing your sexual partners via a phone call, text message, letter or email. There are ways of doing this either personally or anonymously.

Your doctor or nurse can assist with informing your current or previous sexual partners.

What should I do if my sexual partner has been diagnosed with pubic lice or scabies?

You may be notified that a sexual partner of yours has been diagnosed with an STI or a BBV. Notification may be in person or via a phone call, text message, letter or email. You may have an infection and be unaware as you may not have symptoms. See your doctor or nurse to discuss ways to lower the risk of transmission, get tested and treated.

Will pubic lice and genital scabies affect my pregnancy or breastfeeding?

If you are infected with pubic lice or genital scabies during pregnancy or breastfeeding, it usually does not cause any health complications for you and your baby.

If you are pregnant or breastfeeding and considering treatment for an STI or BBV, ask your doctor, nurse or midwife about the possible effects of the treatment or medicine on your baby or breastfeeding. Pubic lice and genital scabies treatment is usually safe to use while pregnant or breastfeeding.

If you are planning a pregnancy or already pregnant, testing for pubic lice and genital scabies is not a routine part of health care. It is recommended you and your sexual partner/s have other STI and BBV screening tests, even if you have been tested in the past. You can book an appointment with us, or speak to your doctor, nurse or midwife for more information.

How can I lower my risk of getting STIs and BBVs?

You can lower your risk of getting STIs and BBVs by using barrier protection (external condoms, internal condoms or dental dams) correctly during any type of sex (vaginal, anal or oral sex) and when sharing sex toys.

Barrier protection is not 100% effective at preventing STIs and BBVs.

You can also lower your risk of getting a BBV by:

You can also lower your risk of getting an STI or BBV by both you and your sexual partners having regular STI and BBV testing. To get an STI or BBV test at Family Planning Victoria, see our clinics or you can book an appointment online.

Where to get more information and support

If you are using the internet for information, only use reliable and reputable websites. Be aware of websites containing inaccurate and harmful information and imagery.

Disclaimer

This website and any related materials are for general information purposes only and should not be relied on as (or in substitution for) medical or other professional advice. You should seek specific medical or professional advice for your individual circumstances.

Copyright ©

The copyright for material on this website is owned by Family Planning Victoria (or, in some cases, by third parties) and is subject to the Copyright Act 1968. We permit you to reproduce or communicate our copyright material if you are a not-for-profit educational organisation, for the purpose of providing the information to your students provided that you include any disclaimers associated with that material. Any other reproduction or communication of our material requires our prior consent, via our consent form which you can complete and submit.

Last updated: 2 August 2021