Treating headaches effectively requires identifying the underlying cause, as headaches can stem from various issues such as fatigue, low blood sugar, high blood pressure, stress, or sinus problems. For fatigue-related headaches, adequate sleep is recommended, while low blood sugar headaches can be alleviated by eating. High blood pressure should be managed directly, and stress-related headaches may benefit from relaxation techniques. While over-the-counter analgesics can provide temporary relief, frequent headaches warrant a consultation with a physician to rule out serious underlying conditions.