Pubic lice, commonly called crabs, are tiny insects found in your genital area. They are a different type of louse from head lice and body lice. Measuring 1/16 inch (1.6 millimeters) or less, pubic lice received their nickname because their bodies resemble tiny crabs.
Pubic lice have six legs; their two front legs are very large and look like the pincher claws of a crab. This is how they got the nickname “crabs.” Pubic lice are tan to grayish-white in color.
How do people get crabs? Sexual transmission - You can get crabs when you have skin-to-skin contact with another person. Even when there is no sexual penetration, you can get (or give) crabs. Non-sexual transmission - You can get crabs from sleeping in an infested bed or using infested towels.
Common myths about crabs
It should be explained that pubic lice infection does not go away on its own and needs therapy. It may be passed on to others if not treated adequately. In addition pubic lice infestation does not carry the risk of transmitting STIs or HIV from one person to another.
Parasites - Lice - Pubic "Crab" Lice
Pubic lice infestations (pthiriasis) are usually spread through sexual contact.
Getting pubic lice doesn't mean you're dirty — it has nothing to do with hygiene or cleanliness. Anybody can get pubic lice if they have close, personal contact with someone who has them. About 3 million people in the U.S. get pubic lice every year.
You can usually see pubic lice by looking closely, or you may need to use a magnifying glass. Pubic lice are tan or whitish-gray, and they look like tiny crabs. They get darker when they're full of blood. Crab eggs (called nits) on the bottom part of your pubic hairs.
A lice-killing lotion containing 1% permethrin or a mousse containing pyrethrins and piperonyl butoxide can be used to treat pubic (“crab”) lice. These products are available over-the-counter without a prescription at a local drug store or pharmacy.
Condoms do not protect someone from pubic lice because the lice live outside of the area that condoms cover. Shaving pubic hair does not always prevent pubic lice. Not sharing clothing, bedding, or towels also can help lower the risk of getting pubic lice.
Animals cannot get or spread pubic lice. If left untreated, the affected area will continue to itch. Repeated scratching of the infested area can result in other serious skin infections.
Blue crabs generally live for 3 or 4 years. They reach maturity in 12 to 18 months. Growth rates are affected by water temperature—they grow more quickly in warmer water. In the Gulf of Mexico, crabs may reach maturity within a year.
You or your doctor can usually confirm a pubic lice infestation through a visual examination of your pubic area. The presence of moving lice confirms infestation. Lice eggs (nits) also may indicate an infestation.
itching around your genitals or back passage, especially at night when the lice are most active. tiny blue spots around your genitals. spots of blood or fine, gritty debris in your underwear. visible lice or tiny eggs in your pubic hair.
And if you think waxing or shaving will protect you from crabs, think again. Removing pubic hair will only work if you remove all other hair with it, and even then it's considered to be an ineffective way of treating crabs by doctors.
You can occasionally get crabs other ways, too. You can catch them by sharing or having contact with the clothes, linens and towels of a person who has them. But you won't get crabs through casual contact, such as handshakes or hugs.
Around 1 to 2 of every 100 Australians are estimated to have public lice.
Common causes of genital itching include contact dermatitis, jock itch, scabies, yeast infection, and folliculitis. Your healthcare provider can help you determine the cause and point you to the best treatment and prevention strategies.
Your pubes may itch for a bunch of different reasons. These include unsafe shaving techniques, infections, and chronic conditions like psoriasis or eczema. Sometimes, a home remedy, OTC cream, or simple lifestyle change can help you manage the itching.
Phthirus pubis, the pubic or crab louse, is an insect of the order Psocodea and is an ectoparasite whose only hosts are humans. They have three stages: egg, nymph and adult. Eggs (nits) are laid on a hair shaft. Females will lay approximately 30 eggs during their 3-4 week life span.
Lice eggs (nits) are often easier to see than live lice. They look like tiny yellow or white dots attached to the pubic hair, close to the skin. Nits can look like dandruff. But you can't pick them off with your fingernail or brush them away.
Avoid sleeping in the same bed as the person with an active lice infestation. Avoid sitting where the person with lice has sat in the past two days. Wash linens and clothing in hot water and dry on high heat. Place stuffed animals, pillows and items that cannot be washed into an airtight bag for two weeks.
Crabs can live for up to 24 hours on bedding, towels, and clothes. They feed on the blood of the infected person (by taking small bites that can cause itching). They lay tiny white eggs (nits) that stick on the hair shaft.
Chlamydia bacteria often cause symptoms that are similar to cervicitis or a urinary tract infection (UTI). You may notice: White, yellow or gray discharge from your vagina that may be smelly. Pus in your urine (pyuria).