Science, Tech, Math › Science What Causes Brain Freeze? How Brain Freeze and Ice Cream Headaches Work Share Flipboard Email Print Mike Kemp Images / Getty Images Science Chemistry Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated May 26, 2019 Have you ever experienced a sudden headache when eating or drinking something very cold? This is brain freeze, sometimes called an ice cream headache. The medical term for this type of headache is sphenopalatine ganglioneuralgia, which is a mouthful, so let's just stick with brain freeze, okay? When something cold touches the roof of your mouth (your palate), the sudden temperature change of the tissue stimulates nerves to cause rapid dilation and swelling of blood vessels. This is an attempt to direct blood to the area and warm it back up. The dilation of the blood vessels triggers pain receptors, which release pain-causing prostaglandins, increase sensitivity to further pain, and produce inflammation while sending signals through the trigeminal nerve to alert the brain to the problem. Because the trigeminal nerve also senses facial pain, the brain interprets the pain signal as coming from the forehead. This is called 'referred pain' since the cause of the pain is in a different location from where you feel it. Brain freeze typically hits about 10 seconds after chilling your palate and lasts about half a minute. Only a third of people experience brain freeze from eating something cold, though most people are susceptible to a related headache from sudden exposure to a very cold climate. How to Prevent and Treat Brain Freeze It's sudden chilling or a cycle of chilling and warming that stimulates the nerve and causes pain, so eating ice cream slowly is less likely to cause brain freeze than wolfing it down. If you are eating or drinking something cold, it also helps to keep your mouth cold rather than allow it to warm up. However, one of the quickest ways to alleviate the pain of brain freeze is to warm your palate with your tongue. Just be sure not to follow that remedy with another scoop of ice cream.