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Swimmer's itch is an itchy rash caused by certain parasites that normally live on waterfowl and freshwater snails. On warm, sunny days — especially in calm freshwater lakes or ponds — these parasites enter the water. While you swim, the parasites might burrow into your skin. The parasites soon die — and you have itchy, red, raised spots on your skin.
Swimmer's itch is usually mild and resolves on its own within a week. In the meantime, control itching with an over-the-counter anti-itch cream, such as hydrocortisone cream. However, if initial itching is severe, scratching can cause abrasions and skin infections. Talk to your doctor if symptoms persist longer than three days.
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