Reduced all symptoms of pain, photophobia, transient blindness, enlarged blind spots, and tinnitus with both cannabis and Dronabinol.
Link: Dronabinol Reduces Signs And Symptoms Of Idiopathic Intracranial Hypertension: A Case Report
Year: 2006
DOI: 10.1089/jop.2006.22.68
Likely probability of the efficacy of cannabis for treatment of Migraine according to the results found in this study.
Cannabis and Dronabinol