Schistosome dermatitis, commonly known as swimmer's itch, is a skin irritation that develops after exposure to certain parasites that live in freshwater snails. Other names for this condition include cercarial dermatitis, avian schistosome dermatitis, bilharzia dermatitis, clam digger's itch, duck itch, lake itch, and snail itch. Symptoms include itching, redness, and small bumps or blisters that may appear within minutes or hours of swimming in contaminated water. Treatment typically involves self-care measures such as avoiding scratching the affected area, taking cool baths or using compresses to relieve itching, and applying topical corticosteroids or calamine lotion to reduce inflammation. Prevention measures include avoiding swimming in contaminated water, wearing protective clothing, and using insect repellent.