01722nas a2200301 4500008004100000245007000041210006800111260000900179300001400188490000600202520085500208653001201063653001001075653002201085653003101107653001101138653001601149653003501165653001401200653001501214653002301229653001401252653002101266653002201287100002401309700002401333856006301357 2000 eng d00aClinical evidence of lice resistance to over-the-counter products0 aClinical evidence of lice resistance to overthecounter products c2000 a199 - 2010 v43 a
BACKGROUND: Over-the-counter insecticidal solutions continue to be the mainstream treatment for most cases of head lice. Recorded insecticidal activity 15 years ago was at 100%, with ovicidal kill at 80%. Recently scattered accounts of possible resistance have surfaced. OBJECTIVE: This article is to document the general consensus that head lice are becoming resistant to standard over-the-counter therapies. METHODS: Direct testing of lethality of adult lice with permethrin and pyrethroid was assessed. RESULTS: Present over-the-counter products proved to be successful in only 9 of 32 head lice tested (28% insecticidal activity). CONCLUSIONS: Our series of cases further documents that over-the-counter head lice preparations no longer achieve high levels of insecticidal activity, suggesting increased resistance to these insecticides.
10aanimals10achild10aDrug Combinations10aDrug Resistance, Microbial10ahumans10ainsecticide10aLice Infestations/drug therapy10aPediculus10aPermethrin10aPiperonyl Butoxide10aPyrethrum10ascalp dermatoses10aTreatment Failure1 aBurkhart, Craig, G.1 aBurkhart, Craig, N. uhttp://journals.sagepub.com/doi/10.1177/12034754000040040500858nas a2200277 4500008004100000020001400041245003900055210003900094260002400133300003200157490000700189653002500196653002800221653001600249653003300265653001100298653001600309653002700325653003900352653003500391653001500426653001200441100002400453700002400477856007900501 2004 eng d a1097-678700aOral ivermectin for Phthirus pubis0 aOral ivermectin for Phthirus pubis aUnited Statesc2004 a1037; author reply 1037 - 80 v5110aAdministration, Oral10aAdministration, Topical10aBody Weight10aDrug Administration Schedule10ahumans10ainsecticide10aInsecticide resistance10aIvermectin/administration & dosage10aLice Infestations/drug therapy10aPermethrin10aPthirus1 aBurkhart, Craig, G.1 aBurkhart, Craig, N. uhttps://phthiraptera.myspecies.info/content/oral-ivermectin-phthirus-pubis