Sun screen symptoms and conditions

Good god. I had some long-named-not-quite-acne thing growing on my face around my nose and mouth and the cream prescribed didn't help so I got Doxy. Today, after having taken it for almost a month, I had the last-straw symptom appear. Blisters on my hands. I spent some time in the sun, with sun screen over what little wasn't covered but I guess the sun screen washed off my hands and where they were exposed is now blistering like I someone threw scalding water on me.

Other symptoms: At first I was nauseous and learned to take food first, then I had the burning hands, feet and face, and now this. I'm done. I'll let you know what horrible things I go through now that I'm going off.