What is the prevalence of pediculosis (lice infestation) in schools?

Updated: Aug 16, 2019
  • Author: Lyn C C Guenther, MD, FRCPC, FAAD; Chief Editor: Michael Stuart Bronze, MD  more...
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Head louse infestation is most common in urban areas and may occur in all socioeconomic groups. Head louse infestations occur most commonly in school-aged children, typically in late summer and autumn. The reported prevalence ranges from 10%-40% in US schools. One study estimates that 12-24 million days of school are lost because of "no-nit" school policies. [15]

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