We have known about them for about 8 years, and they are back once again with a vengeance just in time for the new school year.
They are super strains of super head lice that have become immune to the pesticides that are found in traditional treatments.
A study by the Journal of Medical Entomology finds that super lice are resistant to just about every over the counter treatment.
So what is a parent to do? Scientists at the CDC say that the lice can still be controlled, and they recommend a visit to your pediatrician for other treatments. Doctors say that there are chemicals that may work, but are available only by a prescription.
[ The Mayo Clinic answers: Should you be worried about these news strains of head lice? ]
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