writes "Scientists have recently concluded a study that ties brain freezes to migraines. During the study researchers monitored blood flow to the brain and noticed that the anterior cerebral artery dilation occurred to bring more blood flow to the brain, maintaining temperature in the temperature sensitive organ. When the blood is trying clear the brain it is restricted causing a pressure imbalance in the brain and thus temporary pain.
Researchers are now looking to see if similar issues occur in migraine sufferers and looking toward pharmaceuticals that might reduce or stop the dilation of the blood vessels to prevent or curb migraines.
Interesting infographic on migraines"Link to Original Source