'Brain freeze' phenomenon may now help treat headaches

Eating ice cream or really chilled soft drinks can trigger crushing headaches in some people, momentarily freezing the brain. New insight into how this happens could open the way for new treatment of other types of headaches, including migraine. Researchers from the Harvard Medical School tracked blood flow to the brain while people drank iced water or lukewarm water. Both were drunk through a straw that was pressed against the roof of the mouth, and the volunteers signalled when the pain started and when it ended.

The results showed that the pain coincided with an artery, the anterior cerebral artery, opening up and flooding the brain with blood. It then constricted and pain receded, the Daily Mail reported. Harvard researcher Jorge Serrador said the rush of blood could be a self-defence mechanism, designed to keep the brain warm and working. However, the sudden flood of blood likely raises pressure inside the skull and so causes pain. To stop pressure reaching dangerous levels, the artery constricts, bringing pressure back down. Hopefully, a better understanding of the phenomenon, also known as brain freeze, will lead to better treatments for migraines and other types of headaches. These findings were presented at the Experimental Biology conference in San Diego, US.

Source: IANS

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