Hypertension, commonly known as high blood pressure, is a condition in which the force of the blood against the walls of the arteries is higher than normal. Symptoms of hypertension can include headaches, dizziness, and vision problems. Diagnosis of hypertension is typically through a physical exam and checking a person's blood pressure levels. Treatment of hypertension often involves lifestyle changes, such as reducing sodium intake, increasing physical activity, and managing stress. Medications may also be prescribed to help reduce blood pressure.