Headache is one of the most common human complaints worldwide. There are two main types of headaches - primary and secondary. Primary headaches include migraines, tension headaches, and cluster headaches, which are caused by the condition itself rather than another cause. Migraines are severe headaches that can cause throbbing pain on one or both sides of the head along with nausea and sensitivity to light and sound. Tension headaches cause mild to moderate dull pain across both sides of the head that is often exacerbated by stress. Cluster headaches involve excruciating pain around one eye and are more common in men. Secondary headaches are caused by underlying conditions like infections, head injuries, or tumors. Diagnosis involves history and exams, while treatment