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Cited by 138Dermatological diseases and infestationsInsect Pest Control StrategiesNail Diseases and Treatments

Comparative in vitro pediculicidal efficacy of treatments in a resistant head lice population in the United States.

Meinking, Terri L., Serrano, Lidia, Hard, Bruce, Entzel, Pamela, Lemard, Glendene, Rivera, Elisabeth, Villar, Maria Elena·2002·Archives of Dermatology
DOI 10.1001/archderm.138.2.220
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Abstract

OBJECTIVE: To compare the pediculicidal activity of 5 head lice products available in the United States on head lice from south Florida. DESIGN: In vitro pediculicidal product comparison. SETTING: Lice Source Services, Inc, located in Plantation, Fla, a clinic for the treatment and grooming of individuals with pediculosis capitis. PARTICIPANTS: Head lice were collected from healthy clients with Pediculus capitis that came to Lice Source Services, Inc, to seek their services. INTERVENTIONS: Within 2 to 6 hours of capture, lice were placed in continuous direct contact with the pediculicide products and observed at regular intervals. Results were compared with findings of a recent study of a treatment-sensitive population of head lice conducted in Panama. MAIN OUTCOME MEASURE: Percentage of lice dead at regular observation intervals between 5 minutes and 3 hours of continuous exposure to the pediculicides. RESULTS: Two prescription products, Ovide lotion (0.5% malathion) and 1% lindane shampoo, were ranked in the same order as in 2 previous studies (first and last, respectively). The order of effectiveness from most to least effective was as follows: Ovide lotion, A-200 shampoo (a natural pyrethrin product synergized with piperonyl butoxide), undiluted Nix (1% permethrin), diluted Nix, RID (a natural pyrethrin product synergized with piperonyl butoxide), and 1% lindane shampoo. CONCLUSIONS: There were statistically significant differences in the efficacy of all the products when compared with the results found in the recent study in Panama, except for Ovide lotion. Of those tested, Ovide was the only pediculicide in the United States that had not become less effective. The difference in efficacy of 1% lindane, Nix, and pyrethrins between the Panama and Florida studies supports the argument that some head lice in the United States have become resistant to these treatments.

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  • Reported resistance to pediculicides (permethrin and pyrethrin) has been increasing and is widespread.

    “Reported resistance to pediculicides (permethrin and pyrethrin) has been increasing and is widespread (1394,1395).”

    From Sexually Transmitted Infections Treatment Guidelines, 2021 (2021) · cites this paper as [1394]

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Authors
Meinking, T. L., Serrano, L., Hard, B., Entzel, P., Lemard, G., Rivera, E., & Villar, M. E.
Affiliations
University of Miami (US)
Venue
Archives of Dermatology
Publisher
American Medical Association (AMA)
Published
2002-02-01
Volume
138
Issue
2
Pages
220-4
ISSN
0003-987X (ISSN-L)
DOI
10.1001/archderm.138.2.220
OpenAlex
W2000307267
Cited by
138
References
23
Citations by year
2025: 6 · 2024: 1 · 2022: 6 · 2021: 1 · 2020: 4 · 2018: 1 · 2017: 1 · 2016: 6 · 2015: 8 · 2014: 2 · 2013: 7 · 2012: 6
FWCI
7.18
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Dermatology (publishedVersion)
  • PubMed (publishedVersion)
Funders
University of Miami
Topics
  • Health Sciences › Medicine › Infectious Diseases › Dermatological diseases and infestations
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Insect Pest Control Strategies
  • Health Sciences › Medicine › Epidemiology › Nail Diseases and Treatments
Keywords
head lice, pediculicide resistance, malathion, lindane, permethrin, pyrethrins, piperonyl butoxide, South Florida
MeSH terms
Adult, Animals, Hexachlorocyclohexane, Child, Hair Preparations, Humans, Insecticide Resistance, Insecticides, Kerosene, Malathion, Lice Infestations, Pediculus, Piperonyl Butoxide, Pyrethrins, Scalp Dermatoses, In Vitro Techniques

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