Swimmer's Itch is caused by larvae known as "sea lice" that dig into the skin and then die. The resulting acne-like rash, pictured above, is very itchy and can cover the entire body. The rash generally lasts from one week to ten days. There are no long-term effects.
Seabather's Eruption normally follows the lines of a swimmer's bathing suit and is caused by anemone and jellyfish larvae. A stinging sensation or itchiness from their stings can begin almost immediately after leaving the water. Unfortunately, itching can last up to fourteen days. Like swimmer's itch, there are no long-term effects.
Call NC Poison Control at 1-800-222-1222 or chat from this site for further treatment advice.