Headaches during pregnancy

The headaches are common in pregnancy. There are various theories about its causes, usually agree on the role of hormones.

Progesterone would have a direct effect on the brain arteries, and was known to classical migraine is due to a special dilation of some of these arteries.

He also indirectly hinder the emptying of bile in the gallbladder, progesterone contribute to headache.

Also, this hormone is responsible for changes in vision (for example, increasing myopia), which also added to facilitate the emergence of real crisis headaches.