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Lect11 Swimmer's Itch - -especially along shorelines and in...

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Cercarial dermatitis (sir-care-e-ahl der-mah-ti-tis) Swimmers itch
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Causal agent/Reservoir/Vector Larvae (cercariae) of schistosomes Found in lakes, ponds and marshes around the world. Certain aquatic snails
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Life Cycle
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Symptoms Initial prickling or itching lasts up to one hour. Followed by itchy papules lasting one –two weeks. Looks similar to poison ivy, mosquito bites, or chicken pox.
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Father and son with swimmer’s itch Itchy red papules on the skin
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Risk Factors Air and water temperatures warm enough for snails to grow and reproduce. Return of migrating birds infected with parasites. Bodies of water containing parasites
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Unformatted text preview: -especially along shorelines and in shallow areas. • Time spent in water. Prevention • Water treatment/Copper sulfate • Choose swimming spots carefully • Avoid shoreline • Rinse after swimming • Don’t feed the birds Treatment • Calamine lotion • Oral antihistamine • Bathing in Epson salts or baking soda • Apply cool compresses to affected areas • If severe – prescription creams such as a mild corticosteroid cream Question Swimmer’s itch is the common name for__? A. Actinic keratosis B. Molluscum contagiosum C. Tinea corporis D. Cercarial dermatitis E. Diphenhydramine...
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