Appendix 1. MEDLINE seach strategy

1. exp PAIN/

2. exp PERIPHERAL NERVOUS SYSTEM DISEASES/

3. exp SOMATOSENSORY DISORDERS/

4. FIBROMYALGIA/ or exp MYOFASCIAL PAIN SYNDROMES/ or POLYMYALGIA RHEUMATICA/

5. ((pain* or discomfort*) adj10 (central or complex or rheumat* or muscl* or muscul* or myofasci* or nerv* or neuralg* or neuropath*)).mp.

6. (fibromyalgi* or fibrosti* or FM or FMS).mp.

7. ((neur* or nerv*) adj6 (compress* or damag*)).mp.

8. 1 or 2 or 3 or 4 or 5 or 6 or 7

9. Clonazepam.mp.

10. (Rivotril or Klonopin).mp.

11. 9 or 10

12. 8 and 11

13. randomized controlled trial.pt.

14. controlled clinical trial.pt.

15. randomized.ab.

16. placebo.ab.

17. drug therapy.fs.

18. randomly.ab.

19. trial.ab.

20. groups.ab.

21. or/13‐20

22. exp animals/ not humans.sh.

23. 21 not 22

24. 23 and 12