Enhancing chronic migraine preventive therapy: low-level 810 nm laser acupuncture as an add-on treatment for patients with unsatisfactory pharmacological effect, a pilot single-blind randomized controlled trial.

Background: Laser acupuncture is a proven non-invasive treatment with effects comparable to traditional acupuncture in different types of headaches, but there is still insufficient evidence for chronic migraine (CM) in adults. We aim to investigate the efficacy and safety of laser acupuncture (LA) as an add-on preventive therapy on CM.

Methods: A single-blind randomized controlled trial was conducted from January 2022 to November 2023.