Kayla+Brendlinge

Why/how migraines occur? ​ What causes a migraine is when the blood vessels which supply blood to the brain start contracting and expanding. When blood vessels expand, they exert pressure on the surrounding nerve endings. This starts sending throbbing sensations to the brain. Occasional decrease of a chemical named cerotronin in our body causes contraction of blood vessels. Then a sufficient supply of blood does not reach brain. When there is a loss in blood supply, the neurons get suffocated. So the brain sends out signals to the blood vessels through the neurons of central nervous system requesting them to expand. When the blood vessels expand in response to the signals, the nerve endings get pressed and the brain experiences unpleasant sensation of pain.