What Causes a Headache?
Headaches can be caused by a variety of factors, including stress, fatigue, poor posture, eyestrain, head trauma, and certain medications. Other common causes of headaches include sinus infections, colds, allergies, and dehydration. In some cases, headaches can be a symptom of a more serious medical condition, such as a brain tumor.
When Should You See a Doctor?
Most headaches are not serious and can be treated with rest, over-the-counter medication, or lifestyle changes. However, if your headache lasts for more than a few days or is accompanied by other symptoms such as fever, confusion, or vision changes, then it's important to see a doctor to rule out a more serious condition.
How Long Should a Headache Last?
Most headaches will typically last anywhere from a few hours to a few days. If your headache does not go away after a few days or if it is accompanied by other symptoms, then it is important to see a doctor.