Head Lice

Head lice

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Adult head lice are approximately the size of a sesame seed [2.5 mm (0.1 in.) to 3.5 mm (0.14 in.)] and can vary in colour from white to brown to dark grey.

Louse eggs (nits) are much smaller [1 mm (0.03 in.)] and look like light grey or brown oval cylinders glued to individual hair shafts.

Head lice spread easily from one person to another through close bodily contact or through shared clothing or personal items such as hats or hair brushes.

ByHealthwise Staff

Primary Medical Reviewer John Pope, MD - Pediatrics

Brian D. O'Brien, MD - Internal Medicine

Specialist Medical Reviewer Susan C. Kim, MD - Pediatrics

Current as ofAugust 21, 2015

Current as of: August 21, 2015

Author: Healthwise Staff

Medical Review: John Pope, MD - Pediatrics & Brian D. O'Brien, MD - Internal Medicine & Susan C. Kim, MD - Pediatrics