Search term(s):

1. (“fibromyalgia” [MeSH Terms] OR “fibromyositis” [All Fields] OR “fibrositis” [All Fields] OR “muscular rheumatism” [All Fields])

2. (“chronic pain, widespread” [All Fields] OR “chronic widespread pain” [All Fields])

3. (“microbiota” [MeSH Terms] OR “microbiota” [All Fields] OR “microbiota” [All Fields] OR “microbiota” [All Fields])

4. 1 or 2

5. 3 and 4

6. Limit 10 to English language, Adults

7. Limit 11 to publication date: 1 January 1976 ^ to 31 December 2024

^ the year “fibromyalgia” became the official term for the condition [67].