Migraine is the most common vascular headache. Vascular headaches are caused by blood vessel abnormalities, which by turn constrict and open blood vessels in the head.
Review Date 7/27/2008
Updated by: Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.