The Progressive Era. During the period known as the Progressive Era (1890s to about 1920) the U.S. government became increasingly activist in both domestic and foreign policy.
One possible link between brain freeze and other headaches is local changes in brain blood flow. If further research confirms all these types of headaches are caused by blood flow changes, new drugs that block widening of the blood vessels - called vasodilation - could improve treatment for sufferers.
âBut for people with migraine, an ice cream headache can lead to a migraine attack.. Any cold food, such as an iced drink or a slushy, can cause an ice cream headache, also known as brain freeze. Extremely cold food stimulates nerves in the top of your mouth that causes your blood vessels to constrict.