how long after treating lice can you go back to school?
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Head Lice Information for Schools Students diagnosed with live head lice do not need to be sent home early from school; they can go home at the end of the day, be treated, and return to class after appropriate treatment has begun. Nits may persist after treatment, but successful treatment should kill crawling lice.
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Don't Obsess Over Nits “A good rule of thumb is this: If no live crawling insects are seen three weeks after the treatment, it's safe to assume that you are in the clear,” Dr. Cohen says. If nits were alive, they would have hatched by now. Nits and their shells may remain in the hair for some time but won't be viable.
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You may not notice any symptoms for up to six weeks the first time you get lice.
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Soak all combs, brushes, hair clips, and barrettes for 1 to 2 hours in the insecticidal shampoo. Or, soak them for 1 hour in soap and water, rubbing alcohol, or Lysol. ... A week to 10 days later, use the shampoo for lice again to kill any newly hatched nits.
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Head lice survive less than 1–2 days if they fall off a person and cannot feed; nits cannot hatch and usually die within a week if they are not kept at the same temperature as that found close to the human scalp.
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You simply wet the hair and use a fine-tooth comb to remove active lice and their eggs. You'll need to do this every week for at least 3 weeks. Some believe you can suffocate and kill lice using greasy substances like petroleum jelly, mayonnaise, or olive oil. But these may not work well.
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After the first treatment, when the egg-laying lice are eliminated, you are no longer contagious. To stop the cycle of lice you must stop the egg laying first, then remove the nits. Timing is everything and you must complete the 3 well-timed treatments to ensure you are lice-free.
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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. Also, itching caused by head lice can last for weeks, even after the lice are gone.
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Additionally, sea lice can affect both adults and children. Individuals can experience a 'prickling' sensation while in the water. However, pruritus generally begins several hours after being in the ocean and lasts about 2 to 4 days, but can persist for up to two weeks.
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Nits (eggs) that are over ½ inch (1 cm) from the scalp are empty egg cases. They are very white in color. Off the scalp, nits (eggs) can't survive over 2 weeks. Adult lice survive 3 weeks on the scalp or 24 hours off the scalp.
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Head lice nits usually take about 8–9 days to hatch. Eggs that are likely to hatch are usually located no more than ¼ inch from the base of the hair shaft. Nits located further than ¼ inch from the base of hair shaft may very well be already hatched, non-viable nits, or empty nits or casings.
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Calculating How Long You Have Had Lice By understanding the life cycle of lice, if there are more nits than adults on the head, we can assume you've had lice for longer than 30 days. This means there has been longer than one louse life cycle on the head because the adult lice were able to lay and hatch their nits.
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Cover the infested head liberally in Vaseline. Place a shower cap over the entire head for the night (or an eight-hour period). Then shampoo the Vaseline out of the hair. This treatment is reported to “smother” the lice.
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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.
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You can treat head lice without seeing a GP. Treat head lice as soon as you spot them. You should check everyone in the house and start treating anyone who has head lice on the same day. There's no need to keep your child off school if they have head lice.
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Head lice sometimes go away on their own because there are not enough insects to maintain the infestation, or they may persist for an indefinite period without treatment. With proper treatment, the infestation usually goes away within about two weeks.
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