Have you ever had an extra icy cold drink or ice cream and felt a sudden stabbing pain in your head? Turns out it’s a real scientific phenomenon. The sharp pain can be triggered by two things: exposure to a cold stimulus, such as drinking or eating something extremely cold too quickly, or by exposing your head to very cold temperatures. The term for this phenomenon is sphenopalatine ganglioneuralgia—try saying that with a mouthful of ice cream.

Arteries that feed your brain pass near the back of your throat. These arteries don’t like quick changes in temperature, so when you eat or drink something cold, it causes them to quickly constrict and then dilate. That causes a quick burst of pain in the lining of your brain. “Brain freeze” typically doesn’t last more than a couple of minutes. 

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