@sueinmn you are parsing on semantics here. GF sensitivity is definitely helpful for FM patients, but so is not eating sugar and simple carbs because they also cause inflammation. So, it’s diagnosed over time. It took me a year to be diagnosed after 10 different specialists. A true FM syndrome would remain even if you are on a low carb, no sugar, no gluten diet. It would probably not be as painful, but it would be underlying. I mentioned misdiagnosis because doctors know very little about it, and are quick to give up and just say idiopathic pain, Fibromyalgia. A catch all.