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A 46-year-old member asked:

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

1 doctor answer1 doctor weighed in
Dr. Heidi Fowler
Psychiatry 27 years experience
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.
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Last updated Apr 22, 2018


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