Headache is the word used to describe aching or pain in the head. There are many types of headaches. Some of them are: Headaches that are from an illness or injury. These may be caused from a virus or other infection. They can also happen when you do not get enough to drink. Tension headaches are not often bad enough to keep you from doing daily activities. You may feel tightness in the muscles around the head, neck, and shoulders. Migraine headaches often start off mild and get worse. You are often not able to do normal activities. This kind of headache may also have other signs with it like throwing up and making it hard to be around light and sounds. Cluster headaches happen again and again. The pain is burning, sharp, and keeps hurting. The pain may happen behind or around your eye. It can also be on one side of your face. Signs can include a stuffed, runny nose and red, watery eyes. They can happen because of smoking, heat, and bright lights. Some drugs can also cause this type of headache. A sinus headache is often thought to be a migraine. The pain is dull and throbbing. The pain happens behind the nose, eyes, forehead, and cheekbones. This is often due to swelling of the sinuses (sinusitis). If you have a fever and greenish yellow thick liquid from your nose, you may have a sinus headache Not all headaches need to be checked by a doctor. Some kinds may be a sign of a serious problem. Care for headaches will depend on what is causing them.