3 doctors weighed in:
Is it possible to only have 1 nit, but still have real head lice?
3 doctors weighed in

Dr. James Ferguson
Pediatrics
2 doctors agree
In brief: Early vs late
Nits by themselves are only seen after new lice have become sexually mature.
That takes ~10 days, days that you can be infested with juvenile lice before they start laying eggs. Nits are laid at skin level, so the distance from the scalp imply s the duration of infestation. After treatment, a dead egg casing may remain. A good soaking with vinegar often loosens the nits & may kill lice.

In brief: Early vs late
Nits by themselves are only seen after new lice have become sexually mature.
That takes ~10 days, days that you can be infested with juvenile lice before they start laying eggs. Nits are laid at skin level, so the distance from the scalp imply s the duration of infestation. After treatment, a dead egg casing may remain. A good soaking with vinegar often loosens the nits & may kill lice.
Dr. James Ferguson
Dr. James Ferguson
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