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Lice Aren't Nice!

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The Life Cycle of Lice

When a female louse finds its way onto the head of a person, she starts laying eggs (nits) along with a glue that firmly attaches the nits to the hair close to the scalp.

An adult female louse can deposit 6 to 8 nits in 2 days.

In a week or so, the nits hatch and become newborn lice, taking their first meal of blood from the person's head.


It takes about 10 days for a newborn louse to become an adult.

An adult louse is about the size of a sesame seed.

Once an adult, the female louse can start laying eggs. This means it only takes 16 days for an egg (nit) to become a female louse capable of laying more eggs.

Adult lice live for 9 to 10 days, making the total life span of a louse from egg to adult about 25 days.


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The Lice Aren't Nice Community Coalition (LANCC) does not endorse or promote any of the products mentioned. Details are provided for your information only! The information in this summary was gathered by the Lice Aren't Nice Community Coalition (LANCC) and was reviewed by the Snohomish Health District. The Lice Aren't Nice Community Coalition (LANCC) does not assume responsibility for the outcome of your treatment. January 2006.

References:
Washington State Department of Health - Lice Aren't Nice Community Coalition of Snohomish County (LANCC) - Publications - January 2006 - www.doh.wa.gov

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