THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia

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  • Lice
  • Lice (Head, Nits)

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    Lice (Head, Nits)

    Lice nits are ovoid, grayish white eggs fixed to the base of hair shafts (top); they have a distinctive appearance on low-power microscopy (bottom).

    Top image courtesy of Thomas Habif, MD. Bottom image courtesy of Dennis D. Juranek, MD, via the Public Health Image Library of the Centers for Disease Control and Prevention.