Was this helpful? Getty As a neurologist specializing in headaches, I see patients with chronic migraines–a serious and debilitating disease which can cause moderate to severe disability. According to the Migraine Research Foundation, approximately 2% of people in the United States suffer with chronic migraines. Chronic migraine is defined as headaches that occur on more than 15 days each month. Some people suffer from migraine headaches continuously all day long, every day of the month. Migraine is a neurological disease. It is important to understand that chronic migraines are physiological, not psychological. They are related to how your body functions and not caused by problems with your mind. Most importantly, migraine is more than a bad headache. It is a collection of neurological symptoms that can include headache, changes in vision, dizziness, nausea and vomiting, and extreme sensitivity to light, sound, touch and smell.