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Show Notes
Contributor: John Winkler, MD
Educational Pearls:
- Swimmers itch is due to a flatworm parasitic infection that causes an itchy rash after the worm burrows into the skin
- The flatworm is passed between bird and snail hosts
- The itch is due to the death of the parasite under the skin which leads to an extremely itchy reaction.
- The rash can be difficult to identify, often erythematous and macular but can develop papules and vesicles eventually scaling
- The treatment is diphenhydramine for milder cases and steroids for more severe cases.
References
Kolářová L, Horák P, Skírnisson K, Marečková H, Doenhoff M. Cercarial dermatitis, a neglected allergic disease. Clin Rev Allergy Immunol. 2013 Aug;45(1):63-74. doi: 10.1007/s12016-012-8334-y. PMID: 22915284
Summarized by Jackson Roos, MS4 | Edited by Erik Verzemnieks, MD
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