A comparison of the clinical efficacy of GON block at the C2 level and GON block at the classical distal occipital level in the treatment of cluster headache

C2 GON blockade demonstrated greater efficacy for early pain relief in CH patients compared with distal GON blockade. These findings suggest that C2 GON blockade may be a more suitable option for both transitional and preventive therapy in CH. Further studies are recommended to confirm these results and to explore the long-term benefits of C2 GON blockade in CH management.