I’ve had bladder problems since high school. I’ve variously been told that it’s endometriosis, interstitial cystitis, and the more recent term, bladder pain syndrome. However, hanging around ankylosing spondylitis (AS) forums has me wondering if there’s more to it than just another health problem for the list. Could my bladder problems actually be caused by my spondylitis? A pattern emerges The first I knew my bladder problems definitely weren’t normal was when I was in high school and had to use the bathroom constantly. I even had to get a doctor’s note to be able to use the bathroom that frequently at my strict high school. It’s not that I…