How can you protect yourself and others from pubic lice?

Photo of a woman hanging out laundry

Pubic lice pass from person to person, especially during sex and close skin contact. You don’t have to take special measures to protect yourself. But if you find pubic lice on your body, you should take care not to pass the parasites on to others.

Pubic lice are usually noticeable because they cause itching and leave blueish-gray or red bite marks in the genital area. The insects themselves and their eggs (nits) can be seen with the naked eye.

You can get rid of the parasites with a simple treatment, but it is still important to protect others and tell people who you might have passed the pubic lice on to.

Do you have to take special preventive measures?

Lots of people shave or otherwise remove their pubic and armpit hair and hair on other parts of the body like the legs and chest for aesthetic reasons. That lowers the risk of infestation because the pubic lice have less chance to cling on. But even shaving off all of your pubic hair doesn't provide one hundred percent protection because pubic lice can survive in hair on other parts of the body – even on eyebrows and eyelashes.

It isn't necessary to disinfect flat surfaces or objects like toilet seats that the lice can't cling on, or to disinfect entire rooms.

Condoms do protect from other sexually transmitted infections. But they can’t prevent pubic lice from spreading.

How can you protect others if you have pubic lice?

To make sure you don't pass the parasites on to other people, it is important not to have sex until you are sure that treatment has got rid of all of the pubic lice.

But you can already pass on pubic lice before you even notice them. That’s why it is important to tell everyone you had sex with in the three months before the . They can then examine themselves and get treatment if needed.

Steady sexual partners are usually treated at the same time so that the pubic lice are not passed back and forth.

Are pubic lice spread through laundry?

Infection through textiles is rare, but possible, especially through bedding, towels and clothes. The lice can cling on to the fibers in the laundry. They can only survive for about 1 to 2 days without direct contact to a human body, but their eggs (nits) can survive for a longer time.

If you use the same bedding after treatment as you were using before, wear clothes you'd already worn, or use the same bath towel, lice or nits that have survived might make it back onto your body. That is also true for other people who use those textiles.

Washing laundry at 60 degrees Celsius gets rid of the parasites. Another option, such as for sensitive textiles, is to seal them in a plastic bag for two weeks and wait for the pubic lice and nits to die.

Centers for Disease Control and Prevention (CDC). Pubic "Crab" lice: Frequently Asked Questions (FAQs). 2020.

Coates SJ, Thomas C, Chosidow O et al. Ectoparasites: Pediculosis and tungiasis. J Am Acad Dermatol 2020; 82(3): 551-569.

Deutsche STI-Gesellschaft (DSTIG). Sexuell übertragbare Infektionen (STI) - Behandlung, Diagnostik und Therapie (S2k-Leitlinie). AWMF-Registernr.: 059-006. 2018.

Dholakia S, Buckler J, Jeans JP et al. Pubic lice: an endangered species? Sex Transm Dis 2014; 41(6): 388-391.

Leone PA. Scabies and pediculosis pubis: an update of treatment regimens and general review. Clin Infect Dis 2007; 44 Suppl 3: S153-159.

Markova A, Kam SA, Miller DD et al. In the clinic. Common cutaneous parasites. Ann Intern Med 2014; 161(5).

Salavastru CM, Chosidow O, Janier M et al. European guideline for the management of pediculosis pubis. J Eur Acad Dermatol Venereol 2017; 31(9): 1425-1428.

Workowski KA, Bachmann LH, Chan PA et al. Sexually Transmitted Infections Treatment Guidelines, 2021. MMWR Recomm Rep 2021; 70(4): 1-187.

IQWiG health information is written with the aim of helping people understand the advantages and disadvantages of the main treatment options and health care services.

Because IQWiG is a German institute, some of the information provided here is specific to the German health care system. The suitability of any of the described options in an individual case can be determined by talking to a doctor. informedhealth.org can provide support for talks with doctors and other medical professionals, but cannot replace them. We do not offer individual consultations.

Our information is based on the results of good-quality studies. It is written by a team of health care professionals, scientists and editors, and reviewed by external experts. You can find a detailed description of how our health information is produced and updated in our methods.

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Created on January 2, 2023

Next planned update: 2025

Publisher:

Institute for Quality and Efficiency in Health Care (IQWiG, Germany)

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