CENTRAL (CRS)	Cochrane ENT Register (CRS)	MEDLINE (Ovid)
1 MeSH DESCRIPTOR Migraine Disorders Explode All AND CENTRAL:TARGET 2 MeSH DESCRIPTOR Vestibular Diseases AND CENTRAL:TARGET 3 MeSH DESCRIPTOR Vertigo AND CENTRAL:TARGET 4 MeSH DESCRIPTOR Dizziness Explode All AND CENTRAL:TARGET 5 #2 OR #3 OR #4 AND CENTRAL:TARGET 6 #1 AND #5 AND CENTRAL:TARGET 7 (migrain* adj5 (vertig* or dizz* or vestibul* or spinning)):AB,EH,KW,KY,MC,MH,TI,TO AND CENTRAL:TARGET 8 #7 OR #6 AND CENTRAL:TARGET	1 MeSH DESCRIPTOR Migraine Disorders Explode All AND INREGISTER 2 MeSH DESCRIPTOR Vestibular Diseases AND INREGISTER 3 MeSH DESCRIPTOR Vertigo AND INREGISTER 4 MeSH DESCRIPTOR Dizziness Explode All AND INREGISTER 5 #2 OR #3 OR #4 AND INREGISTER 6 #1 AND #5 AND INREGISTER 7 (migrain* adj5 (vertig* or dizz* or vestibul* or spinning)):AB,EH,KW,KY,MC,MH,TI,TO AND INREGISTER 8 #7 OR #6 AND INREGISTER 9 * AND CENTRAL:TARGET 10 #8 NOT #9	1 exp Migraine Disorders/ 2 Vestibular Diseases/ 3 Vertigo/ 4 exp Dizziness/ 5 2 or 3 or 4 6 1 and 5 7 (migrain* adj5 (vertig* or dizz* or vestibul* or spinning)).ab,ti. 8 6 or 7 9 randomized controlled trial.pt. 10 controlled clinical trial.pt. 11 randomized.ab. 12 placebo.ab. 13 drug therapy.fs. 14 randomly.ab. 15 trial.ab. 16 groups.ab. 17 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 18 exp animals/ not humans.sh. 19 17 not 18 20 8 and 19
Embase (Ovid)	Web of Science Core Collection (Web of Knowledge)	Trial Registries
1. exp vestibular migraine/ 2. (migrain* adj5 (vertig* or dizz* or vestibul* or spinning)).ab,ti. 3. 1 or 2 4. Randomized controlled trial/ 5. Controlled clinical study/ 6. Random$.ti,ab. 7. randomization/ 8. intermethod comparison/ 9. placebo.ti,ab. 10. (compare or compared or comparison).ti. 11. ((evaluated or evaluate or evaluating or assessed or assess) and (compare or compared or comparing or comparison)).ab. 12. (open adj label).ti,ab. 13. ((double or single or doubly or singly) adj (blind or blinded or blindly)).ti,ab. 14. double blind procedure/ 15. parallel group$1.ti,ab. 16. (crossover or cross over).ti,ab. 17. ((assign$ or match or matched or allocation) adj5 (alternate or group$1 or intervention$1 or patient$1 or subject$1 or participant$1)).ti,ab. 18. (assigned or allocated).ti,ab. 19. (controlled adj7 (study or design or trial)).ti,ab. 20. (volunteer or volunteers).ti,ab. 21. human experiment/ 22. trial.ti. 23. 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 24. (random$ adj sampl$ adj7 ("cross section$" or questionnaire$1 or survey$ or database$1)).ti,ab. 25. comparative study/ or controlled study/ 26. randomi?ed controlled.ti,ab. 27. randomly assigned.ti,ab. 28. 25 or 26 or 27 29. 24 not 28 30. Cross‐sectional study/ 31. randomized controlled trial/ or controlled clinical study/ or controlled study/ 32. (randomi?ed controlled or control group$1).ti,ab. 33. 31 or 32 34. 30 not 33 35. (((case adj control$) and random$) not randomi?ed controlled).ti,ab. 36. (Systematic review not (trial or study)).ti. 37. (nonrandom$ not random$).ti,ab. 38. "Random field$".ti,ab. 39. (random cluster adj3 sampl$).ti,ab. 40. (review.ab. and review.pt.) not trial.ti. 41. "we searched".ab. 42. review.ti. or review.pt. 43. 41 and 42 44. "update review".ab. 45. (databases adj4 searched).ab. 46. (rat or rats or mouse or mice or swine or porcine or murine or sheep or lambs or pigs or piglets or rabbit or rabbits or cat or cats or dog or dogs or cattle or bovine or monkey or monkeys or trout or marmoset$1).ti. and animal experiment/ 47. 29 or 34 or 35 or 36 or 37 or 38 or 39 or 40 or 43 or 44 or 45 48. 23 not 47 49. 3 and 48	# 3 #2 AND #1   Indexes=SCI‐EXPANDED, CPCI‐S Timespan=All years   # 2 TOPIC: (((randomised OR randomized OR randomisation OR randomisation OR placebo* OR (random* AND (allocat* OR assign*) ) OR (blind* AND (single OR double OR treble OR triple) ))))   Indexes=SCI‐EXPANDED, CPCI‐S Timespan=All years   # 1 TOPIC: (migrain* NEAR/5 (vertig* or dizz* or vestibul* or spinning) )   Indexes=SCI‐EXPANDED, CPCI‐S Timespan=All years	Clinicaltrials.gov ( migraine OR migrainous ) AND ( vertigo OR dizziness OR dizzy OR vertiginous OR vestibular OR spinning )   ICTRP migrain* AND (vertig* OR dizz* OR vestibul* OR spinning)