What is the cause of the headache for three days

It is recommended that CT or MRI of the head be completed to rule out organic brain disease. If the imaging is normal, there are common tension headaches. Patients with tension headaches have variable headache sites, which can be bilateral, unilateral, top of the neck, bilateral occipital, etc. Usually the process of persistent dull pain, and daily life and work are often not affected during the headache. Patients usually have a feeling of tightness and pressure, which is mainly caused by mental tension and stress. In addition, it may also be caused by hypertension, so blood pressure should be monitored. If blood pressure is elevated, patients may have headache, nausea and vomiting, and severe elevation of blood pressure may cause cerebral hemorrhage. It should be corrected in time. The main blood pressure lowering drugs commonly used are levoclodipine, amlodipine besylate, and also valsartan and irbesartan can be applied.