![]() Once an outbreak of swimmer’s itch has occurred in water, will the water always be unsafe? Also, they are less likely to towel dry themselves when leaving the water. Children are most often affected because they tend to swim, wade, and play in the shallow water more than adults. Larvae are more likely to be present in shallow water by the shoreline. Swimmer’s itch is not contagious and cannot be spread from one person to another.Īnyone who swims or wades in infested water may be at risk. If itching is severe, your health care provider may suggest prescription-strength lotions or creams to lessen your symptoms.Ĭan swimmer’s itch be spread from person-to-person? Scratching may cause the rash to become infected. Apply baking soda paste to the rash (made by stirring water into baking soda until it reaches a paste-like consistency).Apply cool compresses to the affected areas.If you have a rash, you may try the following for relief: Most cases of swimmer’s itch do not require medical attention. The greater the number of exposures to contaminated water, the more intense and immediate symptoms of swimmer’s itch will be.īe aware that swimmer’s itch is not the only rash that may occur after swimming in fresh or salt water.ĭo I need to see my health care provider for treatment? Itching may last up to a week or more, but will gradually go away.īecause swimmer’s itch is caused by an allergic reaction to infection, the more often you swim or wade in contaminated water, the more likely you are to develop more serious symptoms. Scratching the areas may result in secondary bacterial infections. Small reddish pimples appear within twelve hours. Within minutes to days after swimming in contaminated water, you may experience tingling, burning, or itching of the skin. tingling, burning, or itching of the skin.What are the signs and symptoms of swimmer’s itch? Because these larvae cannot develop inside a human, they soon die. Although humans are not suitable hosts, the microscopic larvae burrow into the swimmer’s skin, and may cause an allergic reaction and rash. This larval form then swims about searching for a suitable host (bird, muskrat) to continue the lifecycle. Infected snails release a different type of microscopic larvae (or cercariae, hence the name cercarial dermatitis) into the water. If the larvae find one of these snails, they infect the snail, multiply and undergo further development. These larvae swim in the water in search of a certain species of aquatic snail. If the eggs land in or are washed into the water, the eggs hatch, releasing small, free-swimming microscopic larvae. The parasites produce eggs that are passed in the feces of infected birds or mammals. The adult parasite lives in the blood of infected animals such as ducks, geese, gulls, swans, and certain mammals such as muskrats and raccoons. How does water become infested with the parasite? Swimmer’s itch is found throughout the world and is more frequent during summer months. While the parasite’s preferred host is the specific bird or mammal, if the parasite comes into contact with a swimmer, it burrows into the skin causing an allergic reaction and rash. These parasites are released from infected snails into fresh and salt water (such as lakes, ponds, and oceans). If the parasite finds a human instead, it can cause swimmer’s itch.Swimmer’s itch, also called cercarial dermatitis, appears as a skin rash caused by an allergic reaction to certain microscopic parasites that infect some birds and mammals. When the water temperature rises, the parasites are released from the snails to go in search of their new bird or mammal host to infect. Over the next three to four weeks, it grows into the second stage of the parasite, which is colorless and very small, so you can’t see them. This first stage swims around until it finds and burrows into a snail. When the poop enter the water, the eggs hatch into the first life stage of the parasite. Infected waterfowl poop contains eggs of the parasite. Waterfowl, such as ducks or geese, are a common source of the parasite and should be kept away from swimming beaches. You cannot get swimmer's itch by swallowing water. Children are more likely to have swimmer’s itch than adults because they are more likely to air dry or spend more time close to shore where the parasite tends to be. The dead remains of the parasite under the skin are what cause people to have the allergic reaction we call swimmer’s itch.Īnyone can get swimmer's itch. Air drying gives the parasite time to burrow into the skin. This can happen when someone air dries after being in water where the parasite is living. The parasites are unable to live in a human and soon die. People get swimmer’s itch when the parasites burrow into their skin.
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