Randomized controlled trials (RCTs) included in the review were selected from three different databases: Academic Search Ultimate, CINAHL with Full Text, and Medline Complete. Initially, PubMed, Cochrane, and Google Scholar were searched to identify the latest systematic reviews on migraine prevention via invasive physiotherapy techniques using key terms such as migraine prevention/prophylaxis, invasive physiotherapy, dry needling, acupuncture, and percutaneous electrostimulation. References from included studies were also searched for any relevant study.
The utilized MESH terms for identifying RCTs were acupuncture OR electroacupuncture OR dry needling OR percutaneous nerve stimulation AND migraine.