First question when you suspect anxiety is, are you having anxious thoughts on a chronic basis? You say you get anxious when these symptoms occur, but that's a different kind of anxiety, that's nervousness, and it's normal because you're in a stressful situation trying to figure out what's going on. Anxiety the mental disorder is irrational fears and obsessive anxious thinking. You don't mention having that. If that kind of thinking was going on, if you were having panic attacks, and the like, that's anxiety and it can cause all manner of symptoms. It can also cause us to focus on things we would normally ignore. Were you having that before this happened? I'm also confused --- very confused -- by some of the treatment you describe. You say you were given beta blockers despite years of being old you didn't need them because your problem only happened occasionally, not enough to cause the risk that this drug treats. That's odd to me, anyway. It's also odd if you weren't feeling anxious thoughts on a chronic basis that you would be put on an antidepressant, and even more odd you would be started out on the one that's the hardest to stop taking, Paxil. Usually that's left for when others with easier reputations don't work, but again, if you're not an anxious person, hard to see what this would do for you. You also were on a low dose, and you weren't on it long enough for it to start working -- it takes 4-6 weeks for antidepressants to start working for most people, though side effects start right away and some people do get quicker results. Stopping this drug can be very hard on you, but since you were on it a short time and it wasn't working, you're probably fine about that. The other weird thing is if you are able to exercise at the level you do you definitely don't have chronic fatigue syndrome -- those folks have a hard time getting out of bed -- so again, some very weird medicine being practiced here, again, to me anyway. Now, I have no idea what's going on with you, though it doesn't sound like heart related stuff. Some of it sounds like vascular constriction such as what migraine sufferers have -- the blurry vision, for example, but you don't report headaches. That's a circulatory problem usually caused by some form of stress that causes constriction and then opening of blood vessels -- you feel it your head because those blood vessels open up first following the constriction period while the ones at the extremities open later, causing the pressure in the head area. Another possibility is the posture issue -- it could be from the neck pinching on nerves. So it could be a lot of things, but I'm not sure the things you're being checked for. Your BP seems normal -- lots of people show high BP at the doctor's office. Anyway, can't diagnose you, no doctors here, but the main point is, if you don't think anxious thoughts that are pretty severe and interfere with your life it's unlikely the cause is anxiety. If you are, it might well be from that.