What is the goal of medication therapy in the treatment of pediculosis and pthiriasis (lice infestation)?

Updated: Aug 16, 2019
  • Author: Lyn C C Guenther, MD, FRCPC, FAAD; Chief Editor: Michael Stuart Bronze, MD  more...
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The goal of therapy is to eliminate lice and eggs. Chemical pediculicides are the mainstay of pharmacotherapy. With most medications, treatment should be repeated in 7-10 days (the time needed for the eggs to hatch) because nits are less effectively killed than adults. Eyelash infestation can be treated effectively with petrolatum ointment (eg, Vaseline).

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