| Migraines are headaches that are caused by a | | | | headaches is not yet known, migraines are often |
| decreased blood flow to the brain and increased | | | | triggered by particular lifestyle factors, including |
| pressure on the blood vessels. They are often | | | | diet, environment (indoor and outdoor), |
| preceded by an "aura," or a sense that the | | | | medications, sleep habits, and hormonal changes. |
| headache is coming on. Some people also | | | | Try to keep a diary of your headaches compared |
| experience visual changes prior to the headache. | | | | to your lifestyle, and look for a pattern to discern |
| These headaches often are accompanied by a | | | | your own particular triggers. Knowing what to |
| sense of nausea and occasionally vomiting. Most | | | | avoid can change your pattern of attacks. The |
| sufferers feel better lying still in a dark, quiet | | | | triggers listed here are the most frequent ones |
| room. Although the exact mechanism of migraine | | | | that migraine sufferers should pay attention to. |