Voxel-based morphometry reveals gray matter abnormalities in migraine.

Area of Science:

• Neuroscience
• Neurology
• Radiology

Background:

• Migraine is traditionally viewed as a functional brain disorder without structural anomalies.
• Emerging magnetic resonance imaging (MRI) research suggests potential subtle brain lesions in migraine patients.

Purpose of the Study:

• To investigate gray and white matter alterations in migraineurs using voxel-based morphometry (VBM).
• To compare brain structure differences between episodic and chronic migraine subtypes.

Main Methods:

• Utilized VBM, an automated MRI analysis technique, on 27 migraine patients and 27 controls.
• Categorized migraine patients into episodic (16) and chronic (11) groups based on International Headache Society criteria.

Main Results:

• Migraineurs exhibited reduced gray matter in the Right Superior Temporal Gyrus, Right Inferior Frontal Gyrus, and Left Precentral Gyrus compared to controls.
• Chronic migraine patients showed greater gray matter reduction in areas including the bilateral Anterior Cingulate Cortex, Left Amygdala, and bilateral Insula.
• A correlation was found between reduced gray matter in the anterior cingulate cortex and migraine attack frequency.

Conclusions:

• Migraine is associated with significant gray matter reduction in pain-processing cortical regions.
• Findings suggest a link between anterior cingulate cortex alterations and migraine frequency.
• The study supports the hypothesis that migraine may be a progressive neurological disorder.