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 Headache After B12 Shot: 3 Effective Strategies to Feel Better 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 A putative mechanism for migraine headaches induced by a trigger. A Download Scientific Diagram How Vitamin Injections Can Fight Migraines Sculpt Spa