20%) reported chronic headaches before embolization. With a mean follow-up of 489 (173) days, 8 of the 9 patients reported improvement of chronic headaches, with 7 having complete resolution. For these 9 patients, the mean HIT-6 score before was significantly higher than after embolization (64 [7.1] vs 40 [9.1], p<0.001). Conclusion In patients with chronic headache undergoing MMA embolization for a cSDH, the majority reported improvement of headaches after the procedure. Future prospective studies are warranted to assess the utility of MMA embolization for chronic headaches.