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. If there is no let up after two days, this is classified as chronic since many sufferers claim this can last for more than 15 days in a given month. In either case, those who are suffering will be able to overcome this problem by determining its root cause. This could be a side effect from current medication, not eating enough nutrients during each meal or not being able to get enough rest. Unfortunately, these treatments have been known to fail among individuals who have mistakenly diagnosed themselves to have sinusitis and therefore suffer from sinus headaches. Studies have been reported to produce results that show that among individuals who think they suffer from sinus headaches, up to 97% of them actually suffer from migraine instead. Infections in the different areas of the body such as the nose, throat, and ear can cause major headache. Characterized by fever, nausea, muscle aches, chills, and diarrhea, Bacterial disease such as ehrlichiosis can be a major cause of headache. Make sure that you visit your physician to get proper treatment. Here are some home remedy examples that you can use to treat that headache. Ginger The ordinary ginger can help you get rid of your nasty headache. It inhibits a substance known as thromboxane A2 that prevents the release of chemicals that make your blood vessels expand. With this effect, ginger is useful for treating migraines as well as other types of headaches. Prophylactic treatment involves the use of Beta Blockers like tenormin, lopressor, and inderal, Calcium Channel Blockers like cardizem, dilacor, and procardia, Antidepressants like elavil and Zoloft, Serotonin Antagonists like Sansert, Anticonvulsants like tegretol, depakote, and dilantin, and Ergot derivatives like cafergot.