Although growing drug resistance can make getting rid of the head lice a real pain, it's not really cause for concern. That's because lice are not dangerous. Lice don't cause health problems or spread any diseases (unlike other bugs, such as ticks), they're just an incredibly annoying problem for both parents and kids.

The fact that lice sometimes don't respond to certain treatments (like medicated over-the-counter and prescription shampoos, cream rinses, or lotions) doesn't mean that they don't ever work. They do, but it may take some time, patience, and working with your doctor to find the right one that finally gets rid of these little pests.

Lice may linger if kids are still exposed to other infested children or if the medication isn't used exactly as directed. Be sure to talk to your doctor before treating — or re-treating — your youngster for lice.