Abstract
This paper reports a rare case of Phthirus pubis infestation of the palpebral margin and scalp hair in an 8-month-old infant. Under the microscope, the lice were observed to have a short and wide, crab-like shape, and were identified as P. pubis. Further molecular identification based on mtDNA cox1 showed that the sequence of lice obtained were 99.70% identical to that of P. pubis, and only 74.73% similarity to that of Pediculus humanus capitis in GenBank. Therefore, the lice infesting the infant was determined to be P. pubis rather than Ped. h. capitis. The patient was cured by mechanical removal of the lice and treatment with ofloxacin eye drops. This report suggested that while the diagnosis and treatment for phthiriasis is not difficult, the case was rare in the clinic and could be easily ignored, resulting in it going undiagnosed or misdiagnosed, leading to delayed treatment.
Data availability
The data that support the findings of this study are openly available in GenBank database under accession number OL739465.
References
Dohvoma VA, Ebana Mvogo SR, Atangana PJA et al (2018) Phthirus pubis infestation of the eyelids presenting as chronic blepharo-conjunctivitis in a 6-year-old girl: A case report. Case Rep Ophthalmol 9:30–344. https://doi.org/10.1159/000485738
Feng X, Qi H (2021) Phthiriasis Palpebrarum. N Engl J Med 385:e5. https://doi.org/10.1056/NEJMicm1913478
Ikeda N, Nomoto H, Hayasaka S et al (2003) Phthirus pubis infestation of the eyelashes and scalp hairs in a girl. Pediatr Dermatol 20:356–357. https://doi.org/10.1046/j.1525-1470.2003.20418.x
Luo B, Xiang N, Liu R et al (2020) Phthiriasis palpebrarum, thelaziasis, and ophthalmomyiasis. Int J Infect Dis 96:511–516. https://doi.org/10.1016/j.ijid.2020.05.061
Mathison BA, Pritt BS (2014) Laboratory identification of arthropod ectoparasites. Clin Microbiol Rev 27:48–67. https://doi.org/10.1128/CMR.00008-13
Papageorgiou E, Kalampalikis S, Koltsidopoulos P et al (2018) Phthiriasis palpebrarum in three young siblings. Oxf Med Case Reports 2018:omy093. https://doi.org/10.1093/omcr/omy093
Patel PU, Tan A, Levell NJ (2021) A clinical review and history of pubic lice. Clin Exp Dermatol 46:1181–1188. https://doi.org/10.1111/ced.14666
Salimi M, Saghafipour A, Hamidi Parsa H et al (2020) Economic Burden associated with head louse (Pediculus humanus capitis) Infestation in Iran. Iran J Public Health 49:1348–1354. https://doi.org/10.18502/ijph.v49i7.3589
Scott MJ, Esterly NB (1983) Eyelash infestation by Phthirus pubis as a manifestation of child abuse. Pediatr Dermatol 1:179. https://doi.org/10.1111/j.1525-1470.1983.tb01112.x
Silburt BS, Parsons WL (1990) Scalp infestation by Phthirus pubis in a 6-week-old infant. Pediatr Dermatol 7:205–207. https://doi.org/10.1111/j.1525-1470.1990.tb00284.x
Funding
This work was supported by the National Natural Science Foundation of China (No. 81471972; 82102422) and Open Experimental Program for Undergraduates of Xi'an Jiaotong University.
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Li, H., Zhang, W., Zhao, Y. et al. Phthirus pubis (Anoplura: Phthiridae) infestation of the palpebral margin and scalp hair in an infant. Int J Trop Insect Sci 43, 351–354 (2023). https://doi.org/10.1007/s42690-023-00948-1
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DOI: https://doi.org/10.1007/s42690-023-00948-1