RESULTS
One hundred twenty chronic migraine patients who had undergone GON block were included in the study. The mean age of these patients was 42.68±7.14 years. Of the patients, 102/120 (85%) were female, and 18/120 (15%) were male. The patients’ mean pain duration was 11.63±5.66 hours. 17/120 (14.2%) patients described pre-headache aura. The demographic and clinical characteristics of the patients were presented in Table 1. (Table2)
The number of days with pain, the number of analgesics used per month, the VAS and MIDAS scores before and one and three months after the treatment were recorded. With the GON block, the number of days with pain regressed from its pre-treatment value of 8.5 [8-12] to 4 [3-4] at the 1st month and 3 [2-4] at the 3rd month. The number of analgesics used monthly by the patients was 14 [10-16] before treatment, 5.5 [4-6.5] at the 1st month, and 6 [5-7] at the 3rd month. The VAS score regressed from its pre-treatment value of 8 [7-9] to 4 [3-4] at the 1st and 3rd months. The MIDAS score also regressed from its pre-treatment value of 4 [3-4] to 2 [1.5-2] at the 1st and 3rdmonths. Significant reductions were observed regarding the number of days with pain, analgesic use, and the VAS and MIDAS scores when the 1st-month and 3rd-month values were compared to the pre-treatment baseline values (p<0.001*). There were no statistically significant differences between the 1st-month and 3rd-month values (Table 2) (Figures 1, 2, and 3).