Headache is a common symptom in many people. The cause may be stress, anxiety, stress, etc. Or a headache originating from other serious illnesses. We need to understand well for effective preventive and curative measures. See more: >>> The Hidden Passage to A Pain-free Future 1. Headache due to stress or stress Pressure work, too much thinking to make your head always in a state of stress, anxiety. The headache will appear often, which can cause dizziness. 2. Headache due to disturbance of living watches Changes in living watches are the cause of headaches, especially for people who often stay up late at work, move between places ... Often the headaches are insomnia. 3. Headache due to dehydration Drinking less water can also cause headaches. Lack of water makes the blood supply to the brain less, oxygen is not enough. This can cause frequent headaches. 4. Headache due to anemia Headache can be a symptom of blood disease. 5. Headache due to sinusit...