Repository of Research and Investigative Information

Repository of Research and Investigative Information

Dezful University of Medical Sciences

Pediculosis capitis; the importance of accurate differentiation of nits and hair casts

(UNSPECIFIED) Pediculosis capitis; the importance of accurate differentiation of nits and hair casts. International Journal of Tropical Insect Science. p. 4. ISSN 1742-7584

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Official URL: <Go to ISI>://WOS:000663686000001

Abstract

Pediculosis capitis is an ectoparasitosis in which Pediculus humanus capitis (Phthiraptera: Anoplura) infest the human scalp. Infestation is confirmed by the presence of adults, nymphs, or viable eggs (nits). The unhatched eggs of head louse is occupied with an embryo, brownish, and has ovoid construction with a curved end. Nit can be misdiagnosed with hair cast, which are thin, amorphous, extended, whitish cylindrical structure, and freely moveable along the hair shaft. It is very important to correctly differentiate pediculosis from hair cast to avoid anxiety and unnecessary treatment. The purpose of this study is to describe three hair cast and seven pediculosis cases in Dezful health center, southwest Iran. This is a study of ten cases reported in our laboratory in 2017. For each case, microscopic and entomological examination of the hairs were performed. The patients were ten women including eight children and two adults. Clinical signs included itching and skin color changes in all the cases. Microscopic examination showed nits anchored to the hair in seven cases. In the other three cases, the initial diagnosis was confirmed to be hair cast. In all pediculosis cases, the diagnosis of cases was confirmed by entomological examination of hairs, which revealed the presence of nit forms of P. humanus capitis. Differentiation of pediculosis from hair cast can avoid apprehension and pointless treatment.

Item Type: Article
Keywords: Pediculus humanus capitis Pediculosis Hair cast Nits Pseudonits Dezful Iran prevalence head lice Entomology
Page Range: p. 4
Journal or Publication Title: International Journal of Tropical Insect Science
Journal Index: ISI
Identification Number: https://doi.org/10.1007/s42690-021-00586-5
ISSN: 1742-7584
Depositing User: مهندس مهدی شریفی
URI: http://eprints.dums.ac.ir/id/eprint/791

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