Today, it was raining, later snowing, and I had a headache almost all day. When it rains, I usually get a headache. It is thought that one of the most important factors of migraine is the change of the weather. When the updraft occurs, the weather becomes bad, and the atmosphere pressure drops. By the atmosphere pressure is dropping sharply, the pressure that is holding the blood vessels in the brain also drops, then the blood vessels are more likely to spread. By the blood vessels in the brain is spread, the nerves surrounding the blood vessels will stimulated and as a result, migraine will be induced. This is one of the hypotheses, but according to my experience, it’s true.
