UNDATED (CBS) -- Almost everyone has experienced brain freeze at one point or another - the sharp pain brought on from eating ice cream too fast or having an ice-cold drink. Now we're learning more about what causes the phenomenon.
A team of researchers found that a sudden increase in blood flow in a particular artery called the "anterior cerebral artery" seems to cause brain freeze. When this artery constricts, the pain recedes.
The findings could eventually lead to new treatments for other kinds of headaches as well - including migraines. New guidelines could provide relief for a lot of migraine sufferers.
The American Academy of Neurology is out with its list of which medications and treatments can help prevent the debilitating headaches.
Along with topiramate or topamax, the guidelines say other seizure medications like divalproex sodium or depakote can be used to prevent migraines. Certain beta-blockers, herbal products like butterbur, and over-the-counter anti-inflammatories, including ibuprofen and naproxen, can also help.
An estimated 36 million Americans suffer from migraines. Preventative measures would help about 40 percent of people who have them frequently.
Experts caution that even over the counter medications have side effects, so consult your doctor before you start any treatment.