After having a stroke in 2005 I have been on a combination of Plavix (anti platlet) and Diovan (high blood pressure). I have visited Florida annually for the last several years, and over the course of the years I always develop blisters, starting on my hands. Over the course of the years they have gotten worse, to the point they generally cover any area exposed to the sun./ Wondering if the medication(s) may have something to do with it. Suggestions?