Swimmer's itch (cercarial dermatitis)
About Swimmer's itch (cercarial dermatitis)
Swimmer's itch patients become infected by a parasite known as a flat worm. The parasite burrows into the skin of people while they swim in an infected lake. The parasites are released into the lake by infected snails. Once in the skin the patient experiences an allergic reaction causing the symptoms of redness and itching. The infections are more common in the summer months. Swimmer's itch is called cercarial dermatitis.Symptoms
Redness of the skin, small bumps on the skin, itching, burning, pimples on the skin. Symptoms appear 12 hours after swimming in an infected body of water.Tests & Diagnostics
A history and physical exam will be performed. There are no specific tests.OTC sleep aids and supportive treatments
Conventional treatment summary
Infections usually resolve without specific treatment. Patients may be prescribed: antihistamines, steroid creams, or anti-itch creams.Medical specialties
Internal Medicine · Dermatology · Pediatrics · Family Practice
This page is educational content, not medical advice. Always consult a qualified clinician for diagnosis and treatment of Swimmer's itch (cercarial dermatitis).