Migraines – The Final Word on Causes and Prevention

WHAT IS A MIGRAINE? A migraine headache is a form of vascular (blood vessels) headache. Migraine headaches are caused by a combination of vasodilatation (enlargement of blood vessels) and the release of chemicals from nerve fibers that coil around the blood vessels. During a migraine attack, the temporal artery enlarges. (The temporal artery is an…