Swimmers Itch

Swimmers itch is caused by contact with larva of schistosomes that burrow into the skin and then die because humans are not the intended host for the lifecycle. It occurs on exposed skin (as opposed to sea-bathers eruption that is on covered skin) after swimming in water containing the larva. It is seen most commonly after freshwater exposure where birds and snails are plentiful as they are important in the lifecycle of the schistosome. Erythematous papules appear within a few days of exposure and will clear spontaneously within a few weeks. Topical steroids may be helpful in lowering itch. Rinse with fresh water and vigorously towelling off after swimming to help decrease severity.