Brain freeze, cold headache, ice cream headache, shakeache, frigid face, freezie, Frozen Brain Syndrome, cold-stimulus headache, or its given scientific name sphenopalatine ganglioneuralgia are terms used to describe a form of cranial pain or headache which people are known to sometimes experience after consuming cold beverages or foods such as ice cream, slurpees, or margaritas, particularly when consumed quickly.