I also have found neuro-muscular massage to be very helpful. I think we tend to guard various parts of our bodies/muscles when there is chronic pain to contend with and over time this causes some mechanical issues that a good therapist can address.
I also have some anatomical/skeletal issues that would be present with or without autoimmune problems, and addressing those also helps over all. That said - I have had some bad and very much less than helpful sessions. It's important to find a good therapist who understands your issues, and doesn't go too gung ho getting into the tissues too deeply, thus causing more pain and problems. Start slowly.
A good soak in the tub, LOTS of water to help flush the system, and taking it easy the rest of the day and/or day after a massage helps. I also have fibro and when I first tried massage, I found that initially, I needed shorter sessions. An hour was just too much.