Thanks to a genetic mutation, super lice are resistant to the treatments you can buy over the counter. But they can still be killed by prescription medicines. Here's how to find out if they are ...

There's also prescription treatments in terms of lice. But those are normally last resort, and often these days are not necessary. More often what's necessary is to do a re-treatment seven to 10 ...

If a person has used medication correctly and the lice remains, they should ask a doctor about prescription strength treatments. Do not use a second OTC medication if the first has failed.