Swimmers itch occur in the skin of humans that have been infected by water-borne worms. prevent stagnant water. Symptoms, which include itchy, red bumps, commonly occur within hours of infection.
This skin dermatitis is caused by the larval stage of a group of flatworm parasites in the family Schistosomatidae, which sounds terrible. Humans usually become infected after swimming in lakes or other bodies of slow-moving fresh water.