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How big are head lice?

ANSWER

Head lice (Pediculus humanus capitis) are about the size of a sesame seed or 2.1 to 3.3 millimeters long when adults. Their eggs, called nits, are barely visible whitish or yellow ovals that attach to hair shafts.

SOURCES: Hoekelman, R. (editor) Mosby, 2001.
Primary Care,


CDC: "Lice,"  CDC: "Scabies."

Reviewed by Stephanie S. Gardner on July 15, 2017

SOURCES: Hoekelman, R. (editor) Mosby, 2001.
Primary Care,


CDC: "Lice,"  CDC: "Scabies."

Reviewed by Stephanie S. Gardner on July 15, 2017

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What are pubic lice?

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