Stellate Ganglion Blockade for Refractory Chronic Migraine

Inclusion Criteria: * 18- 65 years of age, diagnosed with chronic migraine in accordance with ICHD-3 criteria, * used migraine preventive medication drugs and * other interventional algologic treatments that have been applied at least three months ago with insufficient benefit are volunteer patients. Exclusion Criteria: * Migraine according to ICHD-3 criteria has a history of primary headache other than migraine, * migraine preventive interventional treatment within the last 3 months and/or botulinum toxin A, nonpharmacological treatment (acupuncture, ozone, cognitive behavioral therapy, etc.), * injection infection at the site, * pregnancy or suspected pregnancy, * known allergy to local anesthetic drugs with a history of malignancy or cranial/cervical surgery, * bleeding-coagulation disorder or oral anticoagulants, * comorbid diseases that may cause headache (uncontrolled hypertension, intracranial lesions), * with diseases that may prevent compliance with treatment (psychiatric disorder, dementia) and * patients who did not accept the planned interventional treatment were excluded from the study will be released.