What do systematic reviews say?

Intervention not reported

The intervention may leads to higher chance of obtaining substantial headache relief (Relief). (low certainty).

• Normobaric and hyperbaric oxygen therapy for the treatment and prevention of migraine and cluster headache 2015 · Cochrane Headline outcomes only
  RR 6.21 [2.41, 16]
  3 studies · 58 participants
  Low