A migraine is a type of headache that can cause intense, throbbing pain, often on one side of the head. It may be accompanied by other symptoms such as nausea, vomiting, and sensitivity to light and sound. Migraines can last from a few hours to several days and can significantly impact daily activities. The exact cause of migraines is not fully understood, but they are believed to involve changes in brain chemicals and blood flow. Certain triggers, such as stress, certain foods, and hormonal changes, can provoke a migraine attack in susceptible individuals. Treatment options include medications and lifestyle changes to help manage symptoms.