Pediculosis STUDENT 02-03-16 - Pediculosis Lice Melanie Dicks Pharm.D BCACP February 3 2016 PPS 926 Nonprescription Pharmaceuticals Supplies II The

Pediculosis STUDENT 02-03-16 - Pediculosis Lice Melanie...

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Pediculosis: LicePediculosis: LiceMelanie Dicks, Pharm.D., BCACP February 3, 2016PPS 926 Nonprescription Pharmaceuticals & Supplies II
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The ConditionThe ConditionParasitic infectionRequire frequent blood feedingsWingless Well-developed legs grip hair shaftsTypesHead lice (Pediculus humanus capitis)Body lice (Pediculus humanus corporis)Pubic lice (Phthirus pubis)
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Types of LiceA – Phthirus pubis aka “crab louse”B – Pediculosis humanus capitis aka “head louse”C – Pediculosis humanus corporis aka “body louse”
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Pediculosis capitis louse
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Epidemiology & Risk FactorsEpidemiology & Risk FactorsHead lice: Mostly ages 3-12 yearsElementary schools and daycaresClose personal contact and sharing personal itemsAll socioeconomic backgroundsMales appear less susceptible African Americans/black people affected much less frequentlyBody lice, AKA “cooties”: Poor hygieneReside in clothingCan transmit typhus and trench feverPubic lice, AKA “crabs”:High risk sexual contact, toilet seats, shared undergarments, bedding, etc . Usually infest pubic areaMay be found in armpits, eyebrows, eyelashes, mustaches, and beards
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Head LiceHead Lice
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PathophysiologyPathophysiologyThe head louse is an active insect, 3-4 mm in length.Female deposits up to 150 eggs (nits) in her 20 -30 day lifespan. Nits are firmly attached to hair shafts and hatch in 5-10 days. The nymph looks like an adult, but matures in 8-9 days.Adults feed insatiably on scalp and adjacent areas of face and neck.Cycle may repeat every 3 weeks.
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Head lice eggs
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Clinical PresentationClinical PresentationA nit/egg is 1 mm and is yellowish or grayish-whiteAfter hatching, egg cases become white and more visible
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  • Head louse, Pediculosis, Body louse, Crab louse, head lice, Pharmacological Therapy

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