A migraine is a series of events that is triggered by either a single stimulus or multiple stimuli in the brain of an individual with overly excitable neurons. This series of events can, but does not always include an excruciating headache. Other symptoms of a migraine can include extreme sensitivity to light and sound; nausea, diarrhea, and vomiting. This also delays the emptying of the stomach into the small intestine (affecting food absorption), decreases blood circulation (leading to cold hands and feet), and additional increases to sensitivity to light and sound.
Some migraines are preceded or accompanied by what is commonly referred to as an aura. An aura is a sort of warning system that our bodies have developed. We use our sensory systems as the delivery method. Auras are often experienced as flashes of light, blind spots or tingling in your arm or leg.
What Causes Migraines?
I wish I could answer this. Hell, I wish anyone could answer this. But the reality is that our understanding of this complex phenomenon is still evolving. The human brain is a fantastically complex thing and migraines are exasperatingly similar to their hosts in that manner. There is a lot that is known…and much that we thought we knew. But as the saying goes…things aren’t always as they seem. The research continues however, and I have faith in every inch of progress that is made. I found a fantastic article that sums up, in a wonderfully concise and understandable manner, much of the current research and understanding of the causes of migraines. Migraine Survival