MedlinePlus Medical Encyclopedia: Head louse infestation

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Head louse infestation - scalp

This is a close-up picture of lice egg sacks (nits) on the hair. They cling to individual hair shafts. (Image courtesy of the Centers for Disease Control and Prevention.)

Update Date: 5/2/2006

Updated by: D. Scott Smith, MD, MSc, DTM&H, Infectious Diseases Division and Dept. of Microbiology and Immunology, Stanford University Medical School, Stanford, CA. Review provided by VeriMed Healthcare Network.

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