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Doctor insights on: How Long Do Head Lice Generally Live

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How long do head lice generally live?

How long do head lice generally live?

Head Lice: The life span of an adult louse on a host ranges up to 30 days. During this time, the female head louse can deposit about 90 eggs. After incubating for seven to 10 days, the nits hatch and, after another 10 days, mature into adult head lice and the cycle begins again. Off the host, adult head lice can live about two to four days at 74 degrees fahrenheit (f) and one to two days at 86 degrees. ...Read more

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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 tell how long my child has had head lice, by the number if nits?

How can I tell how long my child has had head lice, by the number if nits?

Not by the number...: ...But by their location on the hair shafts. A head louse will attach her eggs (which is what nits are) to hair shafts at the point where they come out of the skin. As the hair grows, the nits move up from the scalp surface. Hair grows about 1 inch per month, on average - so if the nits are a half-inch away from the scalp, lice have been present for about 2 weeks; an inch away, 4 weeks; and so on. ...Read more

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How long is it supposed to it take for head lice to show up and start itching?

How long is it supposed to it take for head lice to show up and start itching?

Lice: It may take 2 to 3 weeks (or sometimes even longer) to become aware of lice or nits. Itching does not occur for all people. ...Read more

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How long does it take a child to get rid of head lice?

Less than a week.: Now many head lice are resistant to our traditional therapies. Cheap method which works is to apply gold listerine to the scalp x 1 hour and cover with shower cap. Then apply househould vinegar and comb through the entire head using sections of 10-20 hairs to remove all nits or eggs.. Leave the vinegar x 1 hour then wash. Repeat in 1 wk. New study showed oral Ivermectin works well. Need an rx! ...Read more

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How long does it take to get rid of head lice in a child?

One treatment: Generally, one treatment (shampoo, nit comb, hair accessory/brush cleaning and linen/bedding change) should be sufficient to rid one of lice. However, reoccurrence is common due to re-infection from improper cleaning of accessories, brushes or linens. ...Read more

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How long after head lice get onto my head would they start laying the eggs/nits?

How long after head lice get onto my head would they start laying the eggs/nits?

It depends on where: they are in their life cycle when they get onto your head. There are adult males and females and only the females lay eggs. Check out this link to the life cycle of head lice: https://images.search.yahoo.com/images/view;_ylt=A0LEViwYs61UOaIAcj0PxQt.;_ylu=X3oDMTBsa3ZzMnBvBHNlYwNzYwRjb2xvA2JmMQR2dGlkAw--?p=head+lice+life+cycle&back=https%3A%2F%2Fsearch.yahoo.com%2Fyhs%2Fsearch%3Fp%3Dhead%2Blice%2Blife%2Bcycle%26hsimp%3Dyhs-001%26hspart%3Dmozilla%26ei%3DUTF-8&w=847&h=484&imgurl=www.mnlicelady.com%2Fresources%2FHeadlice_Lifecycle.jpg&size=38KB&name=Headlice_Lifecycle.jpg&rcurl=http%3A%2F%2Fwww.mnlicelady.com%2Fmyths-facts.php&rurl=http%3A%2F%2Fwww.mnlicelady.com%2Fmyths-facts.php&type=&no=1&tt=119&oid=49592317e194b3ea05198706d481fab7&tit=head+lice+life+cycle&sigr=119fl54uk&sigi=11j6919ca&sign=10mr2ehqg&sigt=103d1h5lg&sigb=130dlufm9&fr=yhs-mozilla-001&hspart=mozilla&hsimp=yhs-001 ...Read more

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How can you most effectively remove head lice in a long haired 11 year old female?

Lice: Tx of lice requires accurate identification of nits & / or lice. A pediculicide is usually used- otc like nix (permethrin) or rid or prescription meds like lindane or malathion. Work carefully through hair & remove individual nits. Purchase a special lice nit comb to aid you. Check for nits & remove as seen over the next 7 to 10 days. If there are nits after 7 to 10 days – a 2nd pediculicide tx may be needed. ...Read more

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Can an infection by head lice be healed naturally? if yes, then how long will it take.

Can an infection by head lice be healed naturally? if yes, then how long will it take.

Define natural ????: Some have offered experience that a stout vinegar, like pickling vinegar can be used as a wash over several days to a week and do this.The acidic solution does loosen the nits/egg casings so they can be removed easily with a nit comb.If this did not work one of the OTC or prescription products could be used. ...Read more

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How long can head lice survive on my furniture and clothes?

A few days: Lice starve to death in 1-2 days off the human host. Nits however survive longer. A nit hatches 7-9 days after the egg is laid. As a result it is recommended to first treat the lice on the "host" then wash clothes, bedcovers and vacume furniture. Also wash brushes and combs. ...Read more

Dr. Heidi Fowler
202 doctors shared insights

Head Lice (Definition)

Also known as pediculus humanus capitis, head lice are tiny parasites that feed on the scalp. It usually affects children and results in an itchy head. Head lice is very contagious and the most common method of transmission ...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