Permethrin

Uses

Permethrin is used to treat scabies, crabs, and lice.

Permethrin is a common synthetic chemical, widely used as an insecticide that kills parasites and their eggs. It is used to treat skin infections caused by parasites, such as scabies, crabs, and head lice. It does not, however, prevent infestations. Moreover, though it is used to kill insects, it has rarely been associated with toxic effects at high doses, including eye and skin irritation, tremors, loss of coordination, hyperactivity and paralysis.

Dosage

Permethrin typically comes as a cream or lotion, and is applied externally. Usually only one application is necessary, although a follow-up application may be required. The shampoo should be applied to the hair and stay in for at least ten minutes before it is rinsed. The cream is applied all over the body and should be left on for 8 to 14 hours.

Side Effects

Side effects are generally mild and may include skin irritation, rash, redness, and swelling.

Notes of Precaution

Permethrin should be stored at room temperature.

Permethrin is for external use only. Avoid contact with eyes, nose, or mouth. Do not swallow it.

After use, thoroughly clean all clothes, bed linens, and towels, as well as bathtubs, showers, and toilets.

Itching may persists for several days or weeks after treatment. It doesn't mean that the treatment did not work.

If family members have signs of infestation, direct them to a doctor as soon as possible.