5 doctors weighed in:

Treated lice on a child but she says it still itches, but I do not see anything?

5 doctors weighed in
Dr. Michael Fisher
Dermatology
2 doctors agree

In brief: Head lice

Itching may continue even after all lice are destroyed.
This happens because of a lingering allergic reaction to their bites. Over-the-counter cortisone (corticosteroid) creams or calamine lotion may help. For severe itching, antihistamine medicines (such as benadryl) or stronger, prescription-strength corticosteroid creams may be needed. Don't give antihistamines without doctors permission.

In brief: Head lice

Itching may continue even after all lice are destroyed.
This happens because of a lingering allergic reaction to their bites. Over-the-counter cortisone (corticosteroid) creams or calamine lotion may help. For severe itching, antihistamine medicines (such as benadryl) or stronger, prescription-strength corticosteroid creams may be needed. Don't give antihistamines without doctors permission.
Dr. Michael Fisher
Dr. Michael Fisher
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Dr. Keira Barr
Dermatology
1 doctor agrees

In brief: Reaction

As long as you no longer see lice or nits you have treated sufficiently.
Often there is a hypersensitivity reaction, ie. A lingering effect from the infestation which could explain the itching. This may last for upwards of a few weeks. Make sure to check behind ears, nape of neck to ensure complete treatment though.

In brief: Reaction

As long as you no longer see lice or nits you have treated sufficiently.
Often there is a hypersensitivity reaction, ie. A lingering effect from the infestation which could explain the itching. This may last for upwards of a few weeks. Make sure to check behind ears, nape of neck to ensure complete treatment though.
Dr. Keira Barr
Dr. Keira Barr
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