Migraines are recurring headaches that can vary from moderate to severe in their intensity and overall impact on one’s life. A migraine is believed to involve the nerves and blood vessels of the brain, affecting just one side of the head and causing a pulsating pain that can last as little as a few hours or as long as several days. Associated symptoms include nausea and sensitivity to sensory stimuli (light, sound or smell) as well as altered mood, fatigue and various neurological symptoms. The onset of a migraine is often (but not always) signalled by short periods of visual, sensory and motoric disturbances known as an ‘aura’.