Let us know if you’ve encountered swimmer’s itch, and access our latest swimmer’s itch research

Learn about our international research program focused on understanding swimmer’s itch-causing parasites and how to control them
Use our interactive map to identify exactly where you, and others, contracted swimmer’s itch

Have you got the itch?

Swimmer’s Itch is the common name for a rash you can develop after swimming in many lakes around the world. The itch is caused by free-swimming larvae of parasites, called schistosomes, accidentally penetrating your skin while you are in the water. This causes an allergic reaction to occur and results in a rash to form that can last up to two weeks. Use our interactive map to see recent swimmer’s itch reports and let us know where you contract swimmer’s itch. Check back frequently so you can keep up-to-date with the latest outbreaks.