T.C.
It very well could be stress-related,heat-related, or you could have gotten bitten by something. BUT; it could also be a reaction to the Zoloft. Just because you have been on it a while, doesn't mean that it can't aggravate something.Don't let the tich go on too long without seeking medical adive. Try WEBMD.com, maybe there will be some solution or advice that can help you there. good luck and take care!!