Vascular headaches and cerebral circulation: an overview.

Area of Science:

• Neuroscience
• Cerebrovascular Physiology
• Pain Research

Background:

• Cerebral circulation is controlled by complex neurotransmission systems.
• Neurotransmitters, peptides, and receptors are present in cerebral arteries.
• Central and peripheral structures likely influence neurogenic control of brain circulation.

Purpose of the Study:

• To re-evaluate the vascular theory of migraine based on neurotransmitter mediation.
• To explore the role of altered neurogenic control in vascular headaches.
• To investigate the potential involvement of locus coeruleus and trigeminal ganglion in headache pathogenesis.

Main Methods:

• Review and re-evaluation of existing literature on neurogenic control and vascular headaches.
• Analysis of neurotransmitter roles in cerebral circulation.
• Consideration of the trigeminal system and its relation to pain pathways.

Main Results:

• Vascular and neurotransmission changes in headaches suggest impaired neurogenic control.
• Locus coeruleus and trigeminal ganglion may induce vascular changes and alter vasodilator activity.
• Deficient enkephalin modulation might affect locus coeruleus and/or trigeminal ganglion functions.

Conclusions:

• Neurotransmitter modulation is key to understanding vascular responses in headaches.
• The origin of pain in vascular headaches may involve vascular factors or central nociceptive pathway dysfunction.
• Understanding neurogenic control of cerebral circulation is crucial for elucidating vascular headache pathogenesis.