Do you feel an annoying and intense itch in your private area around your pubic hair? You might even spot tiny, crawling bugs if you look closely. The cause could be something you never expected: pubic lice, which people often call crabs. Hearing these names can make you feel worried, embarrassed, or scared.
Please take a deep breath because there is no reason to panic or feel ashamed. This condition is much more common than you think, and it is very easy to cure with the right treatment. Let us talk about everything you need to know so you can feel better right away.
Pubic lice are tiny parasitic insects that live in coarse human body hair, especially in the pubic region. While they share similarities with head lice, they are a distinct species adapted to different hair types and environments.
Key Takeaways About Pubic Lice.
- Pubic lice, or crabs, are tiny insects that feed on human blood and cause intense itching.
- They spread mainly through close physical and sexual contact, not through poor hygiene.
- You can treat them effectively using special over-the-counter or prescription shampoos and creams.
- Washing your clothes, bedding, and towels in hot water is vital to prevent reinfection.
- Your recent sexual partners must also receive treatment at the same time to stop the cycle.
Know your body mass index (BMI) and weight classification
What Are Pubic Lice?
Simply put, pubic lice are tiny bugs that live in the hair around your private parts. They are somewhat like head lice, but they are a totally different type of bug. People often call them crabs because their bodies look like miniature crabs.
These bugs are parasites. That means they need to feed on human blood to stay alive. They cling to coarse hair and pierce the skin to feed several times a day.
Remember that pubic lice are different from head lice. Having head lice does not mean you will get pubic lice, and pubic lice will not move up to your head hair.
However, crabs can live in other areas of your body that have coarse hair. Common places where they might live include:
- Your underarms.
- Your beard, mustache, or other facial hair.
- Your chest and stomach hair.
- Your eyelashes and eyebrows, which happens more often in young children.
How Do Pubic Lice Spread?
These bugs spread from one person to another through close physical contact. That means your hair must touch the hair of someone who already has pubic lice for the bugs to crawl over. This usually happens during sexual activity.
In rare cases, pubic lice can also spread if you share towels, bed sheets, or clothing with someone who has them. Thankfully, effective treatments exist to eliminate these bugs and their eggs completely.
Is This a Sexually Transmitted Infection?
Most people consider pubic lice to be a sexually transmitted infection, or STI. This is because they spread most often during sexual contact. However, they are technically not a disease or infection caused by a virus or bacterium. They are simply tiny external parasites.
While sexual contact is the primary way they spread, you can catch them through other forms of close bodily contact. Still, sexual transmission is by far the most frequent route.
Are Pubic Lice a Dangerous Disease?
No, pubic lice do not carry or spread dangerous diseases. Having them does not mean you have an underlying medical illness. However, they cause a very annoying, hard-to-ignore itch that can drive you crazy.
When you scratch the itchy skin repeatedly, you can create tiny breaks or wounds. If bacteria enter these broken areas of skin, you can develop a secondary bacterial skin infection.
How Common Are Pubic Lice?
This condition is much more common than you might think. People of any race, background, or country can get pubic lice. They are most common among adults who are sexually active.
Millions of people worldwide experience pubic lice every single year. Because they are so common, doctors treat them routinely every day.
What Are the Symptoms of Pubic Lice?
It usually takes about five days after the bugs arrive for your symptoms to start showing. Watch out for these main signs:
- Intense itching in your hairy regions, especially around your genitals and pubic area.
- Red bumps or skin irritation where the bugs bite, which may bleed slightly from scratching.
- Tiny dark or bluish spots in your underwear from louse droppings.
- Tiny white or yellowish specks attached firmly to hair shafts, which are louse eggs called nits.
- Pale blue or grayish spots on your thighs, buttocks, or lower belly.
- A mild fever and a general feeling of tiredness in some cases.
Why Do These Lice Cause Such Intense Itching?
The reason is very simple. These lice survive by drinking your blood. They bite your skin to feed, which creates tiny wounds.
The intense itch you feel is actually an allergic reaction of your immune system to the saliva of the lice injected when they bite you.
What Do Pubic Lice Look Like?
Pubic lice are very small, so you might not notice them with a quick glance. However, if you look closely in a well-lit area, you can spot them moving around your pubic hair.
An adult louse looks like a tiny sea crab, which is how they got the name crabs. You might even see them crawling slowly along the hairs.
Pubic lice look different at each stage of their life cycle:
- Eggs or Nits: These are very hard to see. They are oval-shaped and colored white, yellow, or pearl. Nits glue themselves tightly right next to the skin at the base of the hair shaft. It takes between 6 and 10 days for these eggs to hatch.
- Nymphs: This is the baby louse that hatches from the egg. It takes about two to three weeks for a nymph to grow into an adult.
- Adults: Fully grown lice have six legs. Their front legs are much larger than the others, looking like crab claws. They are brown or grayish-white in color. Adults measure between 1.1 and 1.6 millimeters long, which is roughly the size of a pencil tip. Both nymphs and adults survive entirely on human blood. If a louse falls off a human body, it will die within 72 hours.
More Important Questions and Answers.
Do Pets Spread Pubic Lice?
No. Dogs, cats, and other household pets cannot carry or spread human pubic lice.
Are They the Same as Head Lice?
No. Head lice and body lice are completely different types of insects compared to pubic lice. Pubic lice prefer coarse pubic hair and rarely move to the hair on your head.
Can Children Get Pubic Lice?
Yes. If a child sleeps in the same bed or shares towels with someone who has pubic lice, they can catch them. When children get pubic lice, the bugs usually settle in their eyelashes or eyebrows.
Important Warning: If you find pubic lice on a young child in their private areas, it can sometimes be a sign of sexual abuse. You must seek medical and child protection advice right away.
Can You Catch Pubic Lice From a Toilet Seat?
Almost certainly not. Pubic lice cannot live for long away from a warm human body. also, they cannot hold onto smooth surfaces like plastic toilet seats with their claws.
How Do You Know You Have Pubic Lice? / How Does a Doctor Diagnose Them?
You might see the bugs yourself, but because they are so tiny, they can be difficult to identify. The absolute best way to confirm the diagnosis is to spot a live louse. They look like tiny grayish-white crabs sitting near the base of the hair.
If you have symptoms but cannot see any bugs, or if you feel unsure, you should visit a doctor for guidance. A doctor can use a magnifying glass or a microscope to look for lice and nits. If your diagnosis of pubic lice is confirmed, your doctor will likely recommend screening for other common sexually transmitted infections.
How Do You Kill Pubic Lice? What Are the Treatments?
You treat pubic lice by applying a special medicated shampoo or cream to the affected area. Normal soap and hot water alone will not kill these bugs. Many of these specialized shampoos and creams are available over-the-counter at your local pharmacy without a prescription. They are safe and effective when you follow the package instructions carefully.
To get the best results from your treatment, follow these steps:
- Check your underarms and all other hairy body areas to see if lice are present there too.
- Wash the area gently and dry it completely.
- Apply the shampoo or cream to every hairy area where lice might hide, including your thighs, underarms, pubic region, buttocks, and around your anus. Never apply these treatments to your eyelashes.
- Leave the product on for the exact amount of time recommended in the instructions, then rinse it off thoroughly.
- Remove remaining nits from the hair shafts using your fingernails, a fine-tooth comb, or a pair of tweezers.
- Put on clean, fresh underwear and clothing after the treatment.
- Wash all your clothes, bedding, towels, and sheets in a washing machine using hot water and dry them on high heat. The heat kills any remaining bugs. If an item cannot be washed, seal it inside a plastic bag for two weeks, or take it to a dry cleaner.
- Never spray household surfaces or clothing with chemical insecticides.
- Avoid sexual activity until the lice are completely gone, which usually takes about two weeks.
- Repeat the treatment in 9 to 10 days if you still see live lice.
Crucial Note: Everyone living in your home and all your sexual partners from the past two months must receive treatment at the same time to prevent passing the bugs back and forth.
What Shampoos and Creams Can You Buy Over-the-Counter?
Pharmacies stock two main types of non-prescription treatments:
- Permethrin cream (1%): You apply this cream to the affected area and rinse it off after about 10 minutes.
- Pyrethrins with piperonyl butoxide: These shampoos are applied to dry hair, left on for 10 minutes, and then rinsed with water.
Brand names for these products include Nix, RID, and similar local pharmacy equivalents containing the same active ingredients.
Are There Prescription medicines Available?
If over-the-counter treatments fail to kill the lice, your doctor can prescribe stronger prescription medicines. Options include prescription-strength topical creams, shampoos, or oral pills.
- Oral ivermectin: Taken as a two-dose pill regimen, this medicine enters your bloodstream so that when the lice bite you, the medicine poisons them.
- Malathion lotion (0.5%): A prescription lotion that you apply to the affected skin and hair, leaving it on for 8 to 12 hours before washing it off.
- Lindane shampoo: This is a powerful prescription treatment that kills lice and eggs. However, lindane can be toxic to the brain and nervous system. Doctors reserve it strictly for patients who fail all other safer treatments.
How Do You Treat Lice and Nits on Eyelashes or Eyebrows?
You must never use standard pubic lice shampoos or creams near your eyes because the chemicals can cause severe eye damage. Instead, you can carefully remove lice and nits by hand using a fine comb or tweezers. If that does not work, your doctor can prescribe a special bland ophthalmic ointment, such as petroleum jelly formulated for eyes, which you apply to the edge of the eyelid several times a day for about 10 days to smother the lice.
Do Home Remedies Work for Pubic Lice?
No. Home remedies like vinegar or essential oils do not reliably cure pubic lice. Shaving off your pubic hair or taking hot baths will not kill them either. You can use a hydrocortisone cream to help soothe the itching, but that will not treat the underlying infestation.
Can You Use These Treatments If You Are Pregnant or Breastfeeding?
If you are pregnant or breastfeeding, you must speak with your doctor before using any lice medicine to ensure it is safe for you and your baby.
Should My Sexual Partners Get Treated Too?
Yes, absolutely. If you have pubic lice, every person you have been sexually intimate with over the past two months must be notified and treated. This stops you from passing the bugs back and forth.
Will Shaving Get Rid of Pubic Lice?
No. Shaving your pubic hair with a razor is not an effective treatment method for pubic lice.
Can Rubbing Alcohol Kill Pubic Lice?
Do not try this. Rubbing alcohol may kill a few adult lice, but it will not kill the eggs (nits) and it can cause severe irritation and chemical burns on sensitive skin in your private area. Stick to clinically proven medical treatments.
Are Pubic Lice Dangerous?
No, pubic lice do not cause severe long-term health problems. The primary issues are intense itching and social discomfort. The main risk arises when excessive scratching breaks your skin, which can lead to a secondary bacterial skin infection.
How Long Does It Take to Get Rid of Pubic Lice?
Most treatments clear the infestation within about two weeks. If any live lice remain after that time, you will need to repeat the treatment protocol.
Can You Get Pubic Lice Again?
Yes, you can get reinfected if you are exposed to pubic lice again. That is why taking proper preventive steps is so important.
How Can You Protect Yourself? (Prevention).
The only foolproof way to prevent pubic lice is to avoid close physical contact with someone who has an active infestation. However, you can greatly lower your risk and prevent reinfection by following these guidelines:
Things You Should Do:
- Never share personal items like clothing, towels, or bedding with other people.
- Limit your number of sexual partners and avoid partners who have active infestations or multiple concurrent partners.
- Ensure that all your recent sexual partners receive treatment at the same time.
- Wash all clothes, sheets, and towels in hot water and dry them on high heat.
- Refrain from sexual activity until you and your partners finish treatment and verify that all lice are gone.
Things You Should Not Do:
- Do not engage in sexual or close physical contact with anyone known to have pubic lice.
- Do not share towels, washcloths, or clothing.
- Do not use household insecticide sprays, as they are ineffective and dangerous to your health.
- Do not try on new bathing suits or underwear in stores without wearing your own clean underwear underneath.
Important Note: People with other sexually transmitted infections have a higher risk of contracting pubic lice. While using condoms helps protect against many STIs, condoms do not protect you against pubic lice because the bugs live on hair outside the condom barrier.
Can You Use Shampoo as a Preventive Measure?
If you learn that a recent sexual partner has pubic lice, you can use a lice shampoo or cream as a precaution, even before symptoms appear.
Does Frequent Bathing Prevent Pubic Lice?
No. Getting pubic lice has nothing to do with personal hygiene. Clean people get pubic lice just as easily as anyone else because the bugs spread through hair-to-hair contact, not dirt.
When Can You Have Sex Again?
You and your partner must wait until you both finish the full treatment and confirm that no live lice or nits remain before engaging in sexual activity again. This usually takes about two weeks.
When Should You See a Doctor?
If you suspect you have pubic lice, you should schedule an appointment with your doctor or visit a local sexual health clinic. While over-the-counter treatments work well for most people, seeing a professional ensures you get the correct diagnosis and stronger prescription medicine if needed.
What Questions Should I Ask My Doctor?
When you talk to your doctor about pubic lice, consider asking these helpful questions:
- What specific pubic lice treatment do you recommend for me?
- How many times do I need to apply this treatment?
- When is it safe for me to resume sexual activity?
- Do I need to notify all my recent sexual partners?
- What steps should I take at home to prevent getting pubic lice again?
- Can crabs cause any long-term complications for my health?
A Note From Dr. Priya Sammani.
Comparison Table: Pubic Lice vs. Head Lice.
| Feature. | Pubic Lice (Crabs). / Head Lice. |
|---|---|
| Preferred Location. | Pubic Lice (Crabs).: Pubic hair, underarms, facial hair. Head Lice.: Scalp and head hair. |
| Main Transmission. | Pubic Lice (Crabs).: Sexual contact. Head Lice.: Head-to-head contact (common in school children). |
| Body Shape. | Pubic Lice (Crabs).: Short and broad, like a crab. Head Lice.: Longer and narrower. |
| Can They Cross Over? | Pubic Lice (Crabs).: Rarely migrate to head hair. Head Lice.: Rarely migrate to pubic hair. |
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