Migraine is a neurological disorder characterized by intense and debilitating headaches, often accompanied by other symptoms such as nausea, vomiting, and sensitivity to light and sound. A common symptom of migraine is a throbbing or pulsing ACHE, usually on one side of the head. This ACHE can be severe and can last for hours or even days. Other symptoms may include fatigue, dizziness, blurred vision, and difficulty concentrating.