What causes strong headaches?

1. Sinus infections: Headaches associated with sinus infections are often described as pressure or pain in the face and forehead. They may also be accompanied by other symptoms such as nasal congestion, runny nose, and fever.

2. Migraines: Migraines are severe headaches that can cause throbbing pain, usually on one side of the head. They can also be accompanied by other symptoms such as nausea, vomiting, and sensitivity to light and sound.

3. Tension headaches: Tension headaches are the most common type of headache and are characterized by a mild to moderate pain around the head, often described as a "band" or "vice-like" sensation.

4. Cluster headaches: Cluster headaches are rare but severe headaches that occur in clusters, with multiple headaches occurring over a period of days or weeks followed by periods of remission.

5. Caffeine withdrawal: Headaches can be a symptom of caffeine withdrawal in people who regularly consume large amounts of caffeine, such as coffee or tea.

6. Hypertension (high blood pressure): Severe or sudden headaches can sometimes be a symptom of dangerously high blood pressure. It is important to seek medical attention if you experience a sudden or severe headache and have high blood pressure.

7. Medication overuse headaches: Headaches can occur due to the overuse of certain medications, such as painkillers. Chronic use of these medications can actually lead to more headaches.

8. Spinal problems: Headaches can sometimes be caused by underlying structural issues with the spine, such as herniated discs or spinal misalignment.

9. Infections and fevers: Severe headaches can be a symptom of various infections, such as meningitis or viral infections, especially when accompanied by fever and other symptoms.

10. Neurological conditions: In rare cases, severe or chronic headaches can be a sign of underlying neurological conditions, such as tumors or abnormalities affecting the brain or surrounding structures.