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Related Experiment Video

Updated: Jul 2, 2026

Clinical Examination Protocol to Detect Atypical and Classical Scrapie in Sheep

Clinical Examination Protocol to Detect Atypical and Classical Scrapie in Sheep

Published on: January 19, 2014

Cercarial dermatitis in the UK.

S J Fraser¹, S J R Allan, M Roworth

¹Department of Dermatology, Victoria Hospital, Kirkcaldy, UK. susannah099@hotmail.com

Clinical and Experimental Dermatology

|August 14, 2008

Summary

Swimmer's itch, or cercarial dermatitis, is an itchy rash caused by parasites from snails. This condition is common globally but has not yet been documented in the United Kingdom.

Area of Science:

Parasitology
Immunology
Dermatology

Background:

Swimmer's itch, scientifically known as cercarial dermatitis (CD), arises from an immune response to non-human schistosome parasites.
These parasites are released by aquatic snails into freshwater environments.

Observation:

Individuals exposed to contaminated water develop a pruritic (itchy) rash.
The eruption is typically macular or papular and appears shortly after swimming.
The condition is self-limiting, meaning it resolves on its own.

Findings:

Cercarial dermatitis is a recognized health concern in Europe, Asia, and the Americas.
To date, there are no recorded cases of swimmer's itch in the United Kingdom.

Implications:

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Last Updated: Jul 2, 2026

Clinical Examination Protocol to Detect Atypical and Classical Scrapie in Sheep

Clinical Examination Protocol to Detect Atypical and Classical Scrapie in Sheep

Published on: January 19, 2014

The absence of recorded cases in the UK suggests a potential lack of parasite presence or underreporting.
Further research is needed to confirm the absence of these parasites in UK waters.
Understanding the geographical distribution of cercarial dermatitis is crucial for public health advisories.