20 causes of headache.

Headaches can have various causes, and it’s important to note that this list is not exhaustive. Here are 20 common causes of headaches:

1. Tension: Stress, anxiety, or muscle tension in the head, neck, or shoulders can lead to tension headaches.
2. Migraine: A neurological condition characterized by recurrent moderate to severe headaches often accompanied by other symptoms such as nausea, sensitivity to light, and visual disturbances.
3. Sinusitis: Inflammation or infection of the sinuses can cause a headache, typically felt as a dull pain around the forehead, cheeks, and eyes.
4. Cluster headaches: Intensely painful headaches that occur in clusters or cycles, often affecting one side of the head and accompanied by symptoms like eye redness, nasal congestion, and tearing.
5. Medication overuse: Frequent use or overuse of certain medications, such as pain relievers or migraine medications, can lead to rebound headaches.
6. Dehydration: Lack of proper hydration can trigger headaches.
7. Eye strain: Prolonged or intense use of the eyes, such as staring at a computer screen or reading for long periods, can cause headaches.
8. Caffeine withdrawal: Abruptly reducing or stopping regular caffeine consumption can lead to headaches.
9. Hormonal changes: Fluctuations in hormone levels, particularly in women during menstruation, pregnancy, or menopause, can be associated with headaches.
10. Neck or spine issues: Poor posture, cervical spine problems, or injuries can cause headaches.
11. Allergies: Seasonal or environmental allergies can trigger headaches, particularly sinus headaches.
12. High blood pressure: Uncontrolled hypertension can lead to headaches in some individuals.
13. Infections: Certain infections, like the flu, common cold, or sinus infections, can cause headaches.
14. Sleep disturbances: Lack of sleep, poor sleep quality, or sleep disorders like insomnia or sleep apnea can contribute to headaches.
15. Excessive noise or bright lights: Exposure to loud noises or bright lights for an extended period can trigger headaches in some people.
16. Weather changes: Rapid changes in weather, such as shifts in barometric pressure or extreme temperatures, can provoke headaches.
17. Dental issues: Dental problems, such as teeth grinding or jaw clenching (bruxism), can lead to headaches.
18. Head or neck injury: Previous head or neck trauma, such as a concussion or whiplash, may cause chronic headaches.
19. Certain foods and beverages: Some individuals may experience headaches after consuming certain foods or drinks, such as alcohol, chocolate, aged cheese, or processed meats.
20. Brain tumors or other serious conditions: While rare, headaches can be a symptom of underlying serious conditions, including brain tumors, aneurysms, or meningitis.

It’s important to consult with a healthcare professional for a proper diagnosis if you experience frequent or severe headaches.