Migraine is a neurological condition that can cause multiple symptoms including throbbing head pain. While there are many things experts still don’t know about migraines, research suggests that there may be a chemical or anatomical difference in migraine sufferers’ brains that make them more susceptible to certain migraine triggers. There are no blood tests for migraines. Migraines don’t cause brain abnormalities that a CT scan or an MRI can detect, although these tests are sometimes ordered to diagnose other problems...