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Related Experiment Videos

Gypsy moth caterpillar dermatitis--revisited.

V T Allen1, O F Miller, W B Tyler

  • 1Department of Dermatology, Geisinger Medical Center, Danville, PA 17822.

Journal of the American Academy of Dermatology
|June 1, 1991
PubMed
Summary

Gypsy moth caterpillar dermatitis causes itchy, raised bumps on exposed skin after contact with the insect's larvae. This reaction is likely due to caterpillar histamine release and a host's delayed hypersensitivity.

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Area of Science:

  • Dermatology
  • Entomology
  • Toxicology

Background:

  • Gypsy moth caterpillars (Lymantria dispar) can cause a specific type of dermatitis.
  • This condition presents as a pruritic, papular, urticarial eruption on exposed skin.

Observation:

  • Two case reports detail the clinical and histopathologic features of gypsy moth caterpillar dermatitis.
  • Both cases occurred during a significant L. dispar infestation in the Northeastern US in 1990.

Findings:

  • The dermatitis is most commonly associated with contact with the first instar larva.
  • The pathogenesis likely involves histamine release by the caterpillar.

Implications:

  • Understanding the pathogenesis aids in managing and preventing this allergic skin reaction.
  • Highlights the dermatologic impact of invasive insect species during peak infestation periods.

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