Sea Lice
Description
Microscopic larvae of jelly fish that become trapped between the skin and the bathing suit. These larvae have the same stinging nematocysts as the adults resulting in the skin irritation and pain. Sea lice are common in the warm waters of the Gulf of Mexico, Caribbean, and along both the east and west coasts of the United States during the summer months.
Symptoms
Intensely itchy red rash, small blisters, elevated areas of skin. The rash may appear anywhere but is most often found in areas covered by swimwear. More severe reactions may include fever, chills, headaches, nausea and vomiting. Severe allergic reactions are rare but can be very serious. The symptoms usually occur 6 hours after exposure and can last 2-14 days.
Tests
A history and physical exam will be performed. The disease is diagnosed by looking at the rash and identifying the recent swimming in susceptible water.
Treatment
Over the counter antihistamines such as diphenhydramine (Benadryl) and topical hydrocortisone cream may help reduce the itching.
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