Duck Itch or
Swimmers Itch
Preventive measures can be taken to either reduce exposure or attempt to prevent the penetration.
Swimming rather than playing or wading in shallow water will reduce exposure. If swimmer’s itch is known to be present, avoid swimming when winds are likely to be carrying cercariae into the beach. Swim offshore if possible.
Brisk and vigorous toweling immediately after leaving the water can crush the cercariae before they can penetrate the skin. Some recreationists have noted that some sunscreens and lotions reduce the infections, and a professional aquatic biologist reports applying a waterproof sunscreen before swimming has personally been successful to prevent swimmer's itch. Once the irritation has developed, various soothing lotions or ointments may be applied to relieve the itching. For severe cases, prescription antihistamines and topical steroid creams may be prescribed by a physician.