a migraine headache is a form of vascular headache. Migraine headache is caused by vasodilation (enlargement of blood vessels )that causes the release of Enlargement of these blood vessel chemical. The chemicals cause inflammation of the arteries magnifies the pain.
migrain attacks commonly activate the sympathetic nervous system in the body. The sympathetic nervous system is often thought of as the part of the nervous system that controls primitive responses to stress and pain , the so-called