Hi! I am having an allergic reaction to plaquenil. I have a horrible rash, getting worse but the minute, that itches and burns terribly. I saw my doc yesterday and he gave me a steroid shot. He said it would take a day or two to work through my system. Benadryl is a joke. I saw a few posts about allergic reactions. I’m wondering how long the rash lasts and when it will start getting better. Would love to hear about other people’s experiences. Any insight is greatly appreciated. Thanks!