I was diagnosed with Fibromyalgia in 2009. When the treatments for Fibro made my symptoms worse, I went to a DC who did holistic/homeopathic to see if there were natural treatments that didn't exacerbate my condition. After 2.5 hours of testing, it turns out I didn't have Fibro; I had Systemic Candidas. Roughly 80% of the symptoms are the same. I changed my diet, did a system cleanse, and after 3 days of purging my system and stripping all sugar and yeast from my diet, 8 years of agony disappeared.
Several other folks that I talked to followed my advice and started getting themselves tested for food allergies. In almost every case, they had food allergies, not Fibro, and changing their diet greatly improved their health.
I hope this helps.