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Lice, head - nits i...	Head louse emerging...	Head louse, male
Head louse - female	Head louse infestat...	Head lice
Nit on human hair

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Nit on human hair

This photograph shows a "nit" or tiny white egg sack attached to the shaft of a human hair. (Image courtesy of D. Scott Smith, MD, MSc, DTM&H.

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Table of Contents

Definition Alternative Names Causes, incidence, and risk factors Symptoms Signs and tests Treatment Expectations (prognosis) Complications Calling your health care provider Prevention References

Head Lice Learning Center

·Basic Info

Doctor Specialties

·In Depth

The Healthy Child

Children and Healthcare

Emotions and Behavior

Age-Specific Concerns

Interactive Tools

·Multimedia

·Related Topics

Lice infestation

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