Botox injections are used to treat migraine headaches and torticollis, not just wrinkles! A migraine is considered chronic when the patient experiences 15 or more headache days per month with each headache lasting for up to 4 hours per day or longer. BOTOX® (onabotulinumtoxinA) is a prescription medicine that is injected to prevent headaches in adults with chronic migraine. If you have Chronic Migraine, a preventive medication like BOTOX® may be an option for you. E-mail The Franklin Pain and Wellness Center to set up an evaluation for yourself or a loved one.