22 Things About Migraines You May Not Know
By Teri Robert

Migraine and Vasodilation

Migraine and Vasodilation

Until recently, it was thought that vasodilation (widening of blood vessels) always occurred during a Migraine. Recently, researchers have observed some Migraines with no vasodilation.

By Teri Robert— Last Modified: 09/28/2012, First Published: 08/06/2011