I've had a migraine since Sept 4th. I took a B12 injection that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one Migraines are a big problem for many people. These severe, nearly disabling headaches can occur anywhere from once a year to three to four times a week. They can last from hours Nutritional Supplements for Your Headache Relief: Beverly Hills Migraine and Pain Management Institute: Chronic Pain Physician Headache Specialists Understanding Pernicious Anaemia: Symptoms, Causes, and Treatments Why Do I Feel Worse After My B12 Injection? Understanding Post Injecti Oxford Origins Migraine: Latest Disease & Treatment Updates Clinical Pain Advisor