It is only when nothing has changed that certain tests have to be done to make sure there is no tumor present. A tension headache can happen to anyone because it strikes without any warning. There are a lot of things that could have triggered this aside from stress such as the side effects of medication being taken to poor eating habits. Actually, one who suffers from cluster headache can experience switches from chronic to episodal attacks and vice versa. The chronic attacks can easily be noticed because the cluster headache attacks at the same time everyday for several weeks and even months. Episodal cluster headache attacks are episodes that happen also at the same time everyday for a few days or weeks and goes into long remission states. Especially important are those drugs that contain ibuprofen, aspirin or naproxen. A talk with your doctor will ensure that the multiple medications that you take will be safe and won't be causing any harm into your system. If you have other health problems aside from your headaches, talking to your doctor would also be a good idea. This can only be done after answering some questions such as how long the headaches have happened including one s medical history. To narrow down the problem, a blood test and a neurological exam will be done on the patient. Two of these tests are the CT scan and the electroencephalogram or EEG. If the brain activity is normal and there are no problems inside like a broken blood vessel or tumor, only then can doctors say it is a chronic headache. Usually triggered by an underlying or existing disorder like infection, injury, or tumor, secondary headaches are known to be results major illnesses. Secondary headaches are also considered as side effects of various disorders like a recent head injury, meningitis, sinus infection, brain tumor, eye diseases, spinal injury, arthritis, and the inflammation of the arteries or temporal arteritis. Symptoms of sinusitis include a sinus headache that may affect several parts of the head including the face, jaws and teeth. During a sinusitis attack, the sinus headache may be localized to one or two pairs of inflamed sinuses but in severe cases, all sinuses are swollen and therefore cause a sinus headache that can be felt in the forehead between the eyebrows, upper jaw and teeth along with tender cheeks and face, the sides of the nose.