Hypertension (HTN or HT), also known as high blood pressure (HBP), is an extended medical condition in which the blood pressure in the arteries is persistently elevated. High blood pressure usually does not cause symptoms. Extended high blood pressure, however, is a considerable risk factor for stroke, coronary artery disease, heart arrest., atrial fibrillation, peripheral arterial disease, vision loss, chronic kidney disease, and dementia. High blood pressure is classified as considerable hypertension or secondary hypertension. About 90–95% of cases are predominant, defined as high blood pressure due to nonspecific way of life and genetic factors.