all those expansion of arteries,

What is a migraine headache?

Migraine headache is caused by vasodilatation (enlargement of blood vessels) that causes the release of chemicals from nerve fibers that coil around the large arteries of the brain. Enlargement of these blood vessels stretches the nerves that coil around them and causes the nerves to release chemicals. The chemicals cause inflammation, pain, and further enlargement of the artery. The increasing enlargement of the arteries magnifies the pain.

How are migraine headaches treated?

• Sleep may be the best medicine if it is possible.
  

i think i shall go get my well-deserved sleep. it's been 2 days that i'm with the headaches. :\