A vascular headache is an outdated term to describe certain types of headache which were thought to be related to blood vessel swelling and hyperemia as cause of the pain.
It is not longer a recognized term and not mentioned in the Headache classification of the International Headache society (IHS), although it is still used by some physicians and still mentioned in some medical classification systems.
Headaches that were described as being vascular headaches include:
Headache Classification Committee of the International Headache Society. Classification and diagnostic criteria for headache disorders, cranial neuralgias and facial pain. Cephalalgia. 1988; 8( suppl 7): 1- 96.