Migraine headaches are episodes of acute pain that typically affect one side of your head. In addition to the intense pain they cause, you may also experience symptoms such as weakness, nausea and vomiting, visual impairment, and a sensitivity to light and sounds. Some people suffer from migraines sporadically, while others experience them on a regular basis. The symptoms of a migraine might be so debilitating that it's hard to walk, work, and go about the daily activities in your life.