“Sphenopalatine ganglioneuralgia" is the complicated medical term for what most of us call an “ice cream headache" or “brain freeze" These more easily understandable terms describe what happens when a low-temperature food, such as ice cream, makes contact with the hard palate, causing a transient but painful headache. The exact cause is unknown, but may be related to sudden constriction and then dilatation of blood vessels involving the roof of the mouth, sending painful impulses along the trigeminal nerve. The cure for brain freeze is actually very simple, and something you can do on your own. The moment you start to experience a brain freeze, press your tongue to the roof of your mouth. The heat from your tongue will transfer heat and energy to your sinuses behind your nose, which will then warm the nerve bundles that cause brain freeze. Keep your tongue firmly against the roof of your mouth until you feel the pain start to dissipate, keep your tongue for as long as it takes.