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Doctor insights on: Difference Between Lice And Crabs

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What is the difference between crabs and pubic lice?

What is the difference between crabs and pubic lice?

They're the same.: Pubic lice are commonly referred to as "crabs" or crab lice. The scientific name is phthirus pubis. ...Read more

Body Lice (Definition)

Body lice (pediculus humanus corporis) are similar to head lice. These are tiny parasitic insects live on the clothes and can often be seen at the seams. They feed on the blood of the host, and can spread certain infections. Generally these are found in the homeless or those who are ...Read more


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How can I know the difference between lice and dandruff?

How can I know the difference between lice and dandruff?

Nits vs dandruff: Nits are louse eggs. Nits can be white, yellow, tan to gray depending on if the nit has hatched, if it is dead or what stage of development it is in. After hatching the shell may be wrinkled and yellow or white. Nits adhere to hairs, unlike dandruff. ...Read more

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What is the difference between prescription and over-the-counter lice treatment?

Active ingredients: The differences between prescription and OTC lice treatments are the active ingredients, treatment protocols (some require more than one application), and side-effect and safety profiles. OTC: 1. Permethrin (NIX) 2. Pyrethrins and piperonyl butoxide (Rid) Rx: 1. Benzyl alcohol 5% (Ulesfia) 2. Malathion lotion (Ovide) ...Read more

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How do you get crabs lice and what's the treatment?

How do you get crabs lice and what's the treatment?

Sexual transmission: The crab louse is usually transmitted sexually. It is most common in teenagers and young adults. It can also be acquired from fomites, such as contaminated clothing, towels, and linens. Acquisition from toilet seats is unlikely. It is commonly treated with a topical pediculocide, such as 1% Permethrin cream or a pyrethrin. ...Read more

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How to know if I have pubic crabs/lice or something else?

Pubic lice: The pubic louse (phthirus pubis) is also given the slang name of crabs. It is about 1/16th of an inch in size ; when magnified looks like a crab. It is most commonly spread during sexual intercourse. It is a different organism then the lice that infect the hair or the body. Blue spots may show on the skin where the lice have been feeding. Nits (eggs) may noted on the pubic hairs. ...Read more

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Can you catch body lice or crabs in public? Like on bus seats or anything like that??

Can you catch body lice or crabs in public? Like on bus seats or anything like that??

Body lice: You need to have close or intimate contact to catch but. But they can be on the clothes too. Be carful. ...Read more

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How to get rid of crabs/pubic lice?

Pubic lice: The most effective approach is to retreat lice. The reason is that not all pediculicides kill the eggs. It is best to retreat in the window when the eggs have hatched into nymphs but are not yet hatching new eggs. There are however, some pediculicides which are strongly ovicidal. ...Read more

Dr. Richard Rissmiller
323 doctors shared insights

Pediculosis (Definition)

Pediculosis is a condition in which a person has lice, a blood-feeding insect, on his or her body. Lice may be present in the head, body, or pubic area, and can be spread by contact between people. Itching ...Read more


Crabs (Definition)

Crab lice is a colloquial term for pubic lice, or the infection of pubic hair by the louse parasite that feeds on human blood. The main symptom is itching. ...Read more