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Migraines are caused when blood vessels in the brain constrict and can be extremely painful. It is important to recognize migraine symptoms to be able to distinguish a migraine from a painful ordinary headache. Migraines are generally more severe and longer lasting than other headaches. In addition, they tend to be highly localized to where the blood vessels are constricted, such as behind one eye. The pain associated with migraines can worsen with exposure to noise and light, and can induce severe symptoms like vomiting and nausea. Some migraine sufferers may experience visual effects before the pain occurs. These can include flashes of light or “glowing” effects. By recognizing the symptoms of your migraines, you can help identify triggers that set off the migraine, and know to avoid them in the future.