If you plan to beat the heat by taking a dip this weekend, we have a warning for you.

The LaPorte County Health Department has received calls concerning a common condition known as "swimmers' itch."

Swimmers from Stone Lake have reported the skin rash.

Symptoms are a prickling sensation with discolored marks that look like chicken pox. They usually occur a few hours after swimming, but can also appear two to three days later.

Symptoms will gradually go away after about a week.

Swimmers' itch is caused by certain parasites that normally live on waterfowl and freshwater snails.