Pubic lice (Pthirus pubis) maintain a worldwide parasitic population infesting two to over 10 percent of human populations, continuing a presence that has been constant since early evidence 10,000 years ago.
Pubic lice are super common.
Millions of people get infected with pubic lice every year. They are tiny insects that look like tiny versions of the crabs you see at the beach. They live on the skin and coarse hairs that are around your genitals, and they feed on your blood.
Teens and people in their 20s are most often affected. But children and older adults can also get pubic lice. Some studies are showing pubic lice cases are decreasing because of genital hair removal techniques like waxing.
The most common way to get pubic lice is through sexual activity. In children, pubic lice may be found in the eyebrows or eyelashes and can be a sign of sexual abuse. However, it may be possible to catch pubic lice after sharing clothing, bedsheets or towels with an infected person.
Pubic lice, also known as crabs, are tiny insects (about 2mm long) that live on coarse human body hair, such as pubic hair. Pubic lice are not linked to poor personal hygiene.
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.
They can be hard to see and are found firmly attached to the hair shaft. They are oval and usually yellow to white. Pubic lice nits take about 6–10 days to hatch.
Itching on the areas where head lice are present is the most common symptom. However, it may take up to 4 to 6 weeks after lice get on the scalp before the scalp becomes sensitive to the lice saliva and begins to itch. Most of the itching happens behind the ears or at the back of the neck.
Your doctor can prescribe a lotion for you to use to kill the lice and nits. If left untreated, you can develop infections from scratching. It can also cause your skin to change color and become scaly and scarred.
Common signs and symptoms of lice include: Intense itching on the scalp, body or in the genital area. A tickling feeling from movement of hair. The presence of lice on your scalp, body, clothing, or pubic or other body hair.
The most common symptom of any type of lice is itching. Lice bites cause an allergic reaction that causes this itchy feeling. However, you may not feel itchy right away, especially if it's a light infestation. You may not notice any symptoms for up to six weeks the first time you get lice.
Lice eggs (nits).
These look like tiny yellow, tan, or brown dots before they hatch. Lice lay nits on hair shafts close to the scalp, where the temperature is perfect for keeping warm until they hatch. Nits look a bit like dandruff, but aren't removed by brushing or shaking them off.
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.
Adult lice are gray-brown and about 1.1–1.8 millimeters long. A person may be able to see them with the naked eye. The eggs and immature lice are smaller, however, and they may not be visible without a magnifying glass.
Around 1 to 2 of every 100 Australians are estimated to have public lice.
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.
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.
Pubic lice are very small (2mm long) and grey-brown in colour. They can be hard to spot, but sometimes you may be able to see them in your hair.
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. This means that you are very unlikely to catch pubic lice from clothing, bed linen, shared towels or toilet seats.
Once you are aware of the lice exposure immediately wet the child's hair and begin to comb through the hair with a fine-tooth comb while removing any lice you see manually. It is extremely important to take action right away to keep the lice from moving deep in the hair and spreading quickly.
While head lice live in your hair and feed on your scalp, body lice usually live in your clothes and bedding. They travel to your skin several times a day to feed on blood. Your clothing seams are the most common places for body lice to lay their eggs (nits).
Someone without lice has direct contact with the head of someone infested with lice. Head lice do not live on body hair, just head hair. You won't get lice simply being in the same room as someone with lice. You won't get lice shaking hands with an infested person.
Using your finger to check for and extract nits (eggs, each of which houses a baby louse) is an integral part of a lice check and can be helpful when treating an infestation. You can actually feel the nits stuck to the hair shaft; each one will feel like a bump on the hair.
A tickling sensation in the scalp
Not everyone feels lice moving around on their scalp, but some people do. Dr. Garcia says that most of her patients say they “don't feel anything,” but others may get a creepy, tickling sensation as lice move around their head.