PEDICULOSIS HEAD LICE Margaret Jahn, MS, MPH Freehold Health Dept

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PEDICULOSIS HEAD LICE Margaret Jahn, MS, MPH Freehold Health Dept. Slide 2 GOALS Learn about head lice WHO, WHAT, WHEN, WHERE & HOW Biology Treatment Diagnosis Prevention & control Slide 3 HEAD LICE Infestation of Pediculus capitis Parasitic insect Hair, eyebrows & eyelashes Excessive itching & scratching Universal susceptibility Unrelated to hygiene Slide 4 HEAD LICE VERY common Affects children 3-11yrs Est. 6-12 million infestations annually Spread from head-to-head contact Feed on blood from scalp DO NOT SPREAD DISEASE! Nuisance! Slide 5 BIOLOGY 101 Life cycle 3 stages Egg, nymph and adult Slide 6 EGGS Called Nits Laid by adult female Cemented to base of hair (6 mm from scalp) Hard to see Resemble dandruff ~ 1 week to hatch Slide 7 EGGS Slide 8 NYMPHS Hatch from eggs Look like adult louse Mature after 3 molts ~ 1 week Slide 9 ADULTS Size of sesame seed 6 legs with claws Females larger Lay up to 8 nits per day 30 day life span 2-3 meals of blood/day Die 1-2 days off scalp Slide 10 ADULTS Slide 11 RISK FACTORS Not related to cleanliness!! Common transmission head-to-head Home School Elsewhere (camp, sports, playground etc.) Slide 12 RISK FACTORS Uncommon transmission Sharing clothing, hair ribbons Using infested combs, brushes, towels Lying on a bed, couch etc. recently in contact with infested person Slide 13 DIAGNOSIS Misdiagnosis VERY common Look for live insects Nits not always reliable Easily confused with dandruff, hair spray etc. Nits >1/4 inch from scalp old Slide 14 TREATMENT ONLY FOR ACTIVE INFESTATION! Check household members & contacts Treat all at same time Supplemental measures Slide 15 TREATMENT Over-the-counter medication FDA approved Pyrethrins or permethrins READ LABEL Do not re-wash hair for 1-2 days Check 8-12 hrs after tx Slower moving, comb dead No dead call healthcare provider Slide 16 Bedding, towels & clothing With in 2 day period Launder in hot water & dry Place in plastic bag for 2 weeks Vacuum furniture and floors of infested hair SUPPLEMENTAL Slide 17 CDC RECOMENDATIONS Students remain in school if Dx during day Children return to school after treatment Nits still present? O.K. as long as no crawling/ live insects Burdensome absenteeism Nits not easily transferred Misdiagnosis common if not by health provider Slide 18 Freehold Township School Policy Slide 19 REMEMBER! WE ARE HERE TO HELP Freehold Health Department 732-294-2060 Slide 20 QUESTIONS