Yes, improvements can come and go, depending on what's happening in/to the body at the time of feeling better (I won't say remission). Things change is more like it. e.g. I had numerous (well over 100) FM "knots" (can't think of term at this time) during the 35++ years I've been diagnosed with this illness. All seem to have disappeared at some point during this time. I've also had severely swollen glands that just suddenly disappeared, but with all of them a different pound of flesh is extracted.
I've always had GI symptoms, but now they're really severe. I don't know what to eat, so many types of diet....and I'm torn in so many directions, so much info, too many doctors (that I don't really listen to any longer, except one), and exhaustion that's never-ending. That one's the key....I did have a couple of years where I had enough energy to walk again (outside) but that ended with attacks of Shingles. I was then bedridden for a year, or had so little energy that I could do nothing.
I'm older though, 74, and with that comes the general problems of aging. 6 stents, high cholesterol, high BP, seizures you name it, I've been there. Pain is better than it used to be....lots of nerve pain that was totally unbearable at one time, but ice has helped in controlling it as much as possible. I also suffered a number of falls last year, one really tore my back up, also. I'm walking around our house as much as possible, at a pretty fast clip but can't maintain it for longer than 10 minutes at a time, thus I do it a few times and also exercises
The illness changes, that's what makes it so hard to find a cause/effect treatment. I've never smoked, been into alcohol big time (although I did quit it totally when my meds increased....eat well although the no. of "good for you" diets out there are insane....just pick a thing to do, it seems and hope for the best. I wish I had more answers for you, but time does change the intensity of things....at least until something comes along to make it more difficult. Oh, but insomnia has been a constant companion. I find that short acting anesthetics, steroids and certain meds (some to help you sleep!) make it all worse. I just came off a 4-5 mo. period where I wasn't sleeping at all, but would just keep going until I passed out for perhaps 2 hrs. at most at a time. I blamed that on my latest hospitalization. I'm a believe in certain meds (not sleeping pills), vitamins, supplements and herbal remedies. Wishes of hope to you. Yours, Lenora.