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- Information about pubic lice, a sexually transmitted disease (STD)
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If not, see these topics
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| Call Your Doctor Now (night or day) If |
- You feel weak or very sick
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| Call Your Doctor Within 24 Hours (between 9 am and 4 pm) If |
- You think you need to be seen
- Pubic area looks infected (pus, soft scabs, or open sores)
- Moving lice in pubic hair and it has been more than 6 hours since treatment
- Pubic lice or nits come back within 1 month
- New or unusual vaginal discharge (yellow, green, foamy-white, or smells bad)
- White or yellow discharge from penis
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| Call Your Doctor During Weekday Office Hours If |
- You have other questions or concerns
- Pubic lice
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Causes & Health Information
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Some Basics...
- Pubic lice are tiny wingless insects that live only on human beings. They are also called “crabs.”
- Pubic lice are very easy to spread to others. They are mainly spread through skin-to-skin contact during sex. If you have pubic lice, there is a 95% chance of spreading them during sex. It is possible that they can be spread through things like infected bed linens or toilet seats. But this is very rare.
- Pubic lice are annoying but cause no serious health problems.
- Up to 30% of people with pubic lice also have another sexually transmitted disease (STD).
Symptoms
- Itching of the pubic area is the main symptom.
- Pubic hair has gray bugs (lice) 1/16-inch long. They move quickly and are hard to see.
- Nits (white or tan eggs) stuck to hair shafts near the skin. Unlike dandruff or sand, nits can't be shaken off the hair shafts.
CARE ADVICE FOR PUBIC LICE
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Treatment for Pubic Lice
- What You Should Know:
- Pubic lice are tiny wingless insects that live only on human beings. They are also called "crabs."
- Pubic lice are annoying but cause no serious health problems.
- Pubic lice are spread easily. They are spread by skin-to-skin contact during sex. They cannot jump.
- You can treat pubic lice at home.
- Here is some care advice that should help.
- Treatment - Shampoo Area with Nix: Buy Nix anti-lice creme rinse (permethrin). Follow these instructions:
- Pour about 2 ounces of the cream onto washed and towel-dried pubic hair. Add a little warm water to work up a lather. Be sure to work the cream into all the hair down to the roots.
- Leave the Nix on for a full 20 minutes (10 minutes is not long enough to kill all the lice).
- Rinse the hair and dry it with a towel.
- Use Nix again in 1 week to kill any nits that were missed.
- Read all package instructions.
- Treatment - Using Other Lice Shampoos:
- There are other over-the-counter lice shampoos made using pyrethrin. Examples include A-200 Clear, R&C, Pronto, and RID.
- If this type of shampoo is used, it must be put on dry hair.
- You should repeat the treatment in 7 days to kill and nits that were missed.
- Read all package instructions.
- Pregnancy and Breastfeeding: The CDC says that women who are pregnant or breastfeeding can be treated with permethrin products (Nix).
- Sexual Contacts:
- Sexual partners that you have had during the last month also need treatment. They still need to be treated even if they don't see any lice.
- Do not have sex until 2 weeks after treatment. All lice and nits should be gone before you have sex again.
- What to Expect:
- With 2 treatments, all lice and nits should be killed.
- If they come back, this can mean a few things. It most often means you have had another contact with an infected person. It can also mean the treatment was not left on long enough or repeated.
- Even after treatment, itching may last for 1-2 weeks.
- There are no lasting problems from having lice. They do not carry other diseases.
- Pregnancy Test, When in Doubt:
- If there is a chance that you might be pregnant, use a urine pregnancy test.
- You can buy a pregnancy test at the drugstore.
- It works best first thing in the morning.
- Follow all package instructions.
- Call Your Doctor If:
- Pregnancy test is positive or you have trouble with the at-home test
- Moving lice in pubic hair and it has been more than 6 hours since treatment
- Pubic lice or nits come back within 1 month
- You get worse
How to Remove Dead Lice and Nits
- What You Should Know:
- Only live lice can transmit lice to another person. Nits (lice eggs) do not transmit lice.
- Most nits (lice eggs) are dead after the first treatment with Nix. The others will be killed with the 2nd treatment in 9 days.
- Removing the dead nits is not essential. However, it may help with the anti-lice treatment and most people just find the notion of having nits in their hair unpleasant.
- Instructions:
- Remove the dead nits and lice by combing with a special nit comb or pull them out one by one.
- Repeat this every 2-3 days for 3 weeks, until you are sure all of the lice and nits are gone.
- Wetting the hair with water makes removal easier.
- Do not use any products that claim they loosen the nits. Here is the reason: they can interfere with the ability of Nix to stay on the hair and keep working.
Hotlines and Internet Resources
- United States - STD Hotline:
- American Social Health Association STD Hotline provides information on STDs, such as chlamydia, gonorrhea, HPV/genital warts, herpes, and HIV/AIDS. It can provide referrals to local clinics.
- Toll-free number (English): (800) 227-8922
- Toll-free number (Spanish): (800) 344-7432
- Their website is at: http://www.ashastd.org
- Internet Resources:
Remember! Call your doctor if any of the "When to Call" symptoms occur.
Disclaimer: This information is not intended be a substitute for professional medical advice. It is provided for educational purposes only. You assume full responsibility for how you choose to use this information.
Author and Senior Reviewer: David A. Thompson, M.D.
Last Reviewed: 9/1/2012
Last Revised: 3/18/2013
Content Set: Adult Symptom Checker
Copyright 2000-2012. Self Care Decisions LLC; LMS, Inc.