I may have written about this before, but I'm not sure. I thought the problem had gone away, but it seems to be back in the last day or two. I have this strange breathing sensation/problem that started up a couple of years ago. I'll be sitting at my desk or watching television or doing something else *not* involving any physical stress, and I'll suddenly get the sense that I'm running out of air. I take a deep breath or two, and then my breathing returns to normal for a while. But then it can happen all over again. Think of dropping or bouncing a ball on the ground, then just letting it continue to bounce on its own, each bounce resulting in a high point for the ball that's a bit lower than the previous one. Eventually, the ball barely gets back off the ground, and you have to drop or bounce it from a higher position to get the process started again. That's kind of what my breathing feels like. I just sense that my breathing is becoming shallower and shallower with each breath, and if I don't consciously take a deep breath (to sort of "set the ball in motion" again), I'll stop breathing completely. When I asked my previous neurologist about this a couple of years ago, he asked me what happens if I don't take a breath. I was taken aback, because it never occurred to me *not* to take that breath! He did send me for an MRI to make sure I didn't have brain-stem problems from my MS. I went through heart and lung-function tests, just about all of them coming back normal (sound familiar?). One test did show a "minimal lung defect," which I suspect may be the result of aspirated acid associated with my GERD. My internist told me that's like a very mild case of asthma. I saw an ENT doc who said I had bad rhinitis and prescribed Flonase and Atrovent. Since I started on those meds, the breathing seems to have gotten better. But as I said, in the last day or two--including now, as I type this message--I'm beginning to feel the same sensations I felt before. So I was wondering whether this sounds at all familiar to anybody, and whether it might be associated with systemic problems related to fibromyalgia. I'm especially curious about whether this might be associated with endocrine problems or problems with the autonomic nervous system. I've checked out some web sites on dysautonomia, but I don't think my symptoms match up. Right now, this breathing thing is just a bit of a nuisance, but it got fairly pronounced before, and I'd like to have some idea of what I'm dealing with if it's coming back. I don't want to start over from scratch. Thanks for whatever information you might have to share. --Laura R.M.