Cause:
Swimmers itch is caused by parasite larvae from birds and mammals which penetrate the human skin and cause temporary skin irritation. The larvae are brought back from the tropics with the spring bird migration.
Occurrence:
Swimmers itch is most prevalent during the warm summer swimming season (July and August).
How to Recognize Swimmers Itch:
After leaving the water you may experience a tingling sensation and red spots appear where the larvae has penetrated the skin. Several hours later the red spots may enlarge to approximately 1/4 inch (6-7 mm) in diameter with a distinct itching sensation.
Note: The degree of reaction depends on your sensitivity and the severity of the infestation.
Precautions To Reduce Or Prevent Swimmers Itch:
- Avoid swimming in areas where swimmer’s itch is a known problem or where signs have been posted warning of unsafe water. The North Bay Parry Sound District Health Unit has posted signs in areas where Swimmer’s Itch has been a noted problem.
- Avoid swimming near or wading in marshy wares where snails are commonly found.
- Avoid, if possible, shallow water as the organism is usually concentrated in shallow areas.
- Towel off immediately when coming out of the water because the larvae do not penetrate the skin until the water evaporates.
- Do not attract birds by feeding them in areas where people are swimming.
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What Do I do if I think I have Swimmer’s Itch?
- Use skin cream to ease the itching, you may have to consult your family physician,
- Cool compresses,
- Bath with ½ cup of baking soda,
- Colloidal oatmeal baths such as Aveeno,*
- Antihistamine medication (Consult a physician or pharmacist)
- Most importantly, try not to scratch. Scratching may cause the rash to become infected. If itching is severe consult with your health care provider.
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Note: Swimmers itch is not considered a public health risk. We offer this information in order that you may prevent exposure to the itch.
For further information, please contact the North Bay Parry Sound District Health Unit at 474-1400 or 1-800-563-2808.
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