Human pediculosis: a critical health problem and what about nursing policy?

Abstract

Lice infestation on the human body (also known as pediculosis) is very common. Cases number in the hundreds of millions worldwide. Three distinct presentations of lice infection exist and each is caused by a unique parasite. Head lice (Pediculus humanus capitis) is by far and away the most common infestation and favors no particular socioeconomic group. A genetically close "cousin," Pediculus humanus corporis, is responsible for body lice and is more commonly associated with poverty, overcrowding, and poor hygiene. Pubic lice (crabs) are caused by Pthirus pubis and is transmitted by intimate and/or sexual contact. No doubt, human lice infestation is an increasing problem worldwide, Apart from being an irritating and a shaming human ecto-parasite, they transmit serious infectious diseases; epidemic or classical typhus, epidemic relapsing fever as well as Trench fever. Eradication of lice infestation prevents transmission of infectious diseases. People who live and work in close proximity to louse-infested individuals may secondarily acquire lice even if they regularly wash their clothes and have good hygiene. Thus, all louse-infested persons and workers in close contact with such persons should periodically inspected and use long-acting safe insecticides. Human lice can be treated with agents such as DDT, malathion, and lindane, but reports of resistance to one or more of them have recently appeared. Pyrethroid permethrin when applied as a dust or spray to clothing or bedding is highly effective against lice and is the delousing agent of choice. Fabric treated with permethrin retains toxicity to lice even after 20 washings, thereby offering significant long-term passive protection against epidemic typhus. Itching may continue even after all lice are destroyed. This happens because of a lingering allergic reactionto their bites. Over-the-counter cortisone (corticosteroid) creams or calamine lotion may help.

• Authors: Mamdouh M El-Bahnasawy, Fadil Eman Ebrahim Abdel, Tosson A Morsy
• Journal: Journal of the Egyptian Society of Parasitology (J Egypt Soc Parasitol) Vol. 42 Issue 3 Pg. 541-62 (Dec 2012) ISSN: 1110-0583 [Print] Egypt
• PMID: 23469630 (Publication Type: Journal Article, Review)

Chemical References

• Insecticides
• Permethrin

Topics

• Animals
• Disease Transmission, Infectious
• Egypt
• Health Policy
• Humans
• Insect Vectors (physiology)
• Insecticide Resistance
• Insecticides (classification, pharmacology, therapeutic use)
• Lice Infestations (diagnosis, therapy, transmission)
• Pediculus (physiology)
• Permethrin (pharmacology, therapeutic use)
• Phthirus (physiology)