i can understand your fustration , i get the same run around from the va , i dont have what you have ( reoccuring shingles) but because for a long time i didnt know what was going on the dr didnt know either you have to become your oun advocate and not back down if your dr isnt listening find one who will its your life and your body learn what you can about the heart how it works look at your symptoms and do research on what foods effect your sysmptoms i know o to well the fustration and the depression from knowing something is wrong and you just cant solve the mystery , the depression then having the dr think its all from your depression and the medications . hope you get some where and use this forum to vent it does help