How do vasoconstrictors relieve a headache?

Relief of dilation. Migraine headaches are due to nerve excitation which can be triggered by hormones, certain foods, or stress. This results in a cascade of neurostransmitter release resulting in pulsatile dilation of blood vessels in the brain. A vasoconstrictor medication like the triptans or ergotamine can result in relief of the headache.

Related Questions

How do vasoconstrictors relieve vascular headache?

Headaches and Vasoco. Headaches occur because of the dilatation of the cerebral arteries. Precluding, dimishing or shortening the duration of this vasodilation will have a beneficial effect on the symptom. Read more...
Several ways. Classic vasoconstrictors have several mechanisms to help. The first is by quieting the release of neuroinflammatory chemicals released from the center causing headaches. The second is by interfering with the dopamine relationship between the headache driver and the vomiting center. The third and probably least important is by vasoconstriction. Read more...

How do vasoconstrictors help relieve a vascular headache?

Decrease pull. The theory behind vascular or migraine headaches is that the blood vessels in the covering of the brain (meninges) are dilated and pull on it, causing pain. The vasoconstrictors reduce this. Read more...