My daughter has had fairly rare bouts of inappropriate anxiety with her ME/CFS. Even when experiencing them she knows they're not related to anything going on in her life -- it's just random, pointless anxiety. Can anyone tell me what the physical cause of this kind of anxiety might be? Might we be dealing with a temporary nutritional deficiency? We can go to the doctor, of course, but he already thinks we're neurotic complainers, so that's not the most appealing solution... yet. PS: What's the deal with GABA? Is it used with ME/CFS much? My limited research so far makes it sound useful, but perhaps too much so. What's the downside?