3 doctors weighed in:
How long can you have lice before showing symptoms?
3 doctors weighed in

Dr. Michael Tomeo
Dermatology
1 doctor agrees
In brief: A few days
They multiply quickly and show nits in the hairs and can cause itch.

In brief: A few days
They multiply quickly and show nits in the hairs and can cause itch.
Dr. Michael Tomeo
Dr. Michael Tomeo
Thank
Dr. Willa Terry
Pediatrics
In brief: Weeks
Head lice can live up to 30 days on a human and heir eggs can live for more than 2 weeks, so that is why it is so hard to get rid of lice.
Symptoms can include intense itching of the scalp and visible lice and nets at the hair shaft. Fortunately, although a nuisance, lice do not transmit infectious diseases.

In brief: Weeks
Head lice can live up to 30 days on a human and heir eggs can live for more than 2 weeks, so that is why it is so hard to get rid of lice.
Symptoms can include intense itching of the scalp and visible lice and nets at the hair shaft. Fortunately, although a nuisance, lice do not transmit infectious diseases.
Dr. Willa Terry
Dr. Willa Terry
Thank
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