Swimmer's Itch

What is swimmer's itch?

Picture of swimmer's itchSwimmer's itch, also called cercarial dermatitis, is a skin rash caused by an allergic reaction to infection with certain parasites of birds and mammals. These microscopic parasites are released from infected snails who swim in fresh and salt water, such as lakes, ponds, and oceans used for swimming and wading. Infection is found throughout the world. Swimmer's itch generally occurs during summer months.

What are the signs and symptoms of swimmer's itch?

Within minutes to days after swimming in contaminated water, you may experience tingling, burning, or itching of the skin. Small reddish pimples appear within 12 hours. Pimples may develop into small blisters. Itching may last up to a week or more, but will gradually go away.


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