I was diagnosed with AN in February 2009 after suffering 14 years with Chronic Fatigue Syndrome and five years with moderate gastroparesis. My GP sent me for AN testing when I developed obstipated constipation and a colon prep did not produce a bowel movement. Shortly after my diagonsis, I developed severe shortness of breath and went through a battery of heart and lung tests which, luckily, were all normal. The cardiologist referred me to the electrophysiologist who said that my AN was causing exercise intolerance in which my heartrate, regardless of the level of exercise, was remaining at the level of rest. Unfortunately, he told me there was nothing he could do to medically manage this problem. Though I do experience mild orthostatic intolerance, he did not feel that I should undergo a Tilt Table Test, though he felt in 2-3 years I would develop POTS. By June 2009, the exercise intolerance had increased in severity to the point where on some days I could no longer walk through stores, do chores around the house, or climb stairs. I have gotten so out breath that I've almost passed out 3 times. By October, I qualified for a handicapped parking sticker and I was riding the motorized scooters in stores. The severity of my breathlessness can vary from one day to another and even within the day. Between the fatigue, nausea, fibromyalgia, migraines, and the breathlessness, I rarely have a day that I feel half-way decent. I've been on disability for the past 5 years because my severe GERD has caused my voice to be extremely hoarse and as a speech pathologist, whose specialty was voice disorders, my job became impossible. Somehow, through all of this, I have maintained a relatively good outlook of life. I realize that this disorder is life altering, but at least, it's not life-threatening. I've been lurking on this board for a while and I've noticed that most members tend to have POTS as their most disabling symptom. I was wondering if anyone else experiences the severe shortness of breath that I do. I feel so isolated. Nobody, my doctors or my family/friends, seems to understand what I'm going through. Heck, I don't understand it myself. The chronic fatigue syndrome and gastroparesis changed my life, but. now when I'm well, this shortness of breath has isolated me even more. Any suggestions?