Pubic lice, also known as crabs, are small parasites that feed on human blood. They're usually found on the pubic hair, but can also be found on other parts of the body where a person has coarse hair (such as armpits, eyelashes, and facial hair). Anyone can get crabs and they are very common.
Pubic lice usually are found in the genital area on pubic hair; but they may occasionally be found on other coarse body hair, such as hair on the legs, armpits, mustache, beard, eyebrows, or eyelashes.
You cannot get rid of pubic lice by washing or shaving, as the lice only need a minimal length of hair on which to lay their eggs. Therefore you do not need to shave your pubic hair.
All hairy areas of the body should be thoroughly checked and treated because lice can move away from treated areas to other hairy parts of the body. Shaving won't get rid of pubic lice.
Pubic lice and their eggs attach very strongly to hair; they won't wash or brush off, nor do they fall off. They cannot survive for long without a human 'host' to feed from.
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.
It can take up to 3 weeks after coming into contact with pubic lice before you notice any symptoms. They are spread through close body contact with someone who has them, most commonly sexual contact. The lice crawl from hair to hair but can't fly or jump.
Pubic lice — also known as crabs — are small parasites that attach to the skin and hair near your genitals. Crabs aren't dangerous, and they're usually pretty easy to get rid of.
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.
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.
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.
Shaving pubic hair alone does not get rid of crabs or pubic lice. Crabs may cling and crawl to other body hair. Pubic lice are resilient creatures that can live on other parts of the body, including the armpits and eyelashes.
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.
Many people with head lice have no symptoms at all. It's impossible to diagnose head lice based on symptoms alone since the only symptom that matters is the presence of lice. However, experiencing the following symptoms suggests it is time to check the scalp: frequent unexplained itching of the head or scalp.
Pubic lice are most common in adults. Every year, about 3 million people in the United States get pubic lice.
Crabs are often referred to as pubic lice and are not to be confused with body lice. The scientific name for crabs is Pediculus pubis. Crabs need blood to survive, but they can live up to 24 hours off a human body.
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.
Pubic lice (Pthirus pubis) 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. Eggs hatch after about a week and become nymphs, which look like smaller versions of the adults.
Summary. Pubic lice are usually sexually transmitted through direct skin-to-skin contact. Pubic lice do not voluntarily leave the body and will need to be treated with a cream or lotion that contains permethrin.
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.
A common misunderstanding is that infestation can be spread by sitting on a toilet seat. This isn't likely, since lice cannot survive away from a warm human body. Also, lice do not have feet designed to walk or hold onto smooth surfaces such as toilet seats.