Headaches are very common. Most headaches disappear on their own (with a little time) or with the help of mild pain relievers. Although most headaches are mild and temporary annoyances, some people have headaches that are so severe they need to consult a doctor for pain relief.
There are various types of headaches: tension, migraine, sinus, and cluster headaches. In a small number of cases, headaches may signal a more serious condition that requires immediate medical attention.
Headaches can be caused by chemical activity in the brain, nerve or blood vessel interference of the head or skull, or tension in the muscles of the head or skull.
Headaches can be triggered by a variety of factors. The most common cause of headaches is prolonged tension or stress. These are called tension headaches or muscle-contraction headaches. Muscles in your scalp, neck, and face tighten and contract, causing spasms and pain. Psychological factors such as anxiety, fatigue, and stress, as well as mechanical factors such as neck strain are often the culprits behind a typical tension headache.