Headaches can have various causes, and they can range from mild and temporary to severe and chronic. Some common causes of headaches include: Tension Headaches : Tension headaches are the most common type of headache and often result from muscle tension or stress in the head, neck, and shoulder regions. Migraine : Migraines are recurring headaches that can cause severe throbbing or pulsating pain, often accompanied by sensitivity to light and sound, nausea, and vomiting. Sinusitis : Sinusitis, an inflammation of the sinuses due to infection or allergies, can lead to a sinus headache. The pain is typically felt around the eyes, cheeks, and forehead. Cluster Headaches : Cluster headaches are severe and occur in cyclical patterns, often causing intense pain on one side of the head, along with nasal congestion and watery eyes. Hormonal Changes : Hormonal fluctuations, especially in women during menstruation, pregnancy, or menopause, can trigger headaches. Dehydration : Not drinking enough