Why would prescribe permethrin 5 percent leave on for 8 hours head lice if it is so dangerous?

Permethrin is a medication used to treat head lice infestations. It is generally considered safe and effective when used as directed. The recommended application time for permethrin 5 percent is 8 to 14 hours. This allows the medication sufficient time to kill the lice and their eggs.

Although permethrin is generally safe, it can cause side effects in some people. These side effects may include skin irritation, itching, burning, and redness. In rare cases, permethrin can also cause more serious side effects, such as seizures and respiratory problems.

The risk of side effects from permethrin is increased if the medication is used incorrectly. For example, if permethrin is left on for longer than the recommended time, it can increase the risk of skin irritation and other side effects.

Therefore, it is important to use permethrin exactly as directed by your doctor. If you experience any side effects, stop using permethrin and contact your doctor.

Here are some additional safety tips for using permethrin:

-Do not use permethrin if you are allergic to any of the ingredients in the medication.

-Do not apply permethrin to broken skin or open wounds.

-Do not use permethrin in the eyes, nose, or mouth.

-Do not use permethrin if you are pregnant or breastfeeding.

-Keep permethrin out of reach of children.