Sterling Heights High Blood Pressure: High Blood Pressure is a condition in which the force of the blood against the artery walls is too high. Usually, hypertension is defined as blood pressure above 140/90 and is considered severe if the pressure is above 180/120. High blood pressure often has no symptoms but can cause health conditions over time. High Blood Pressure is a condition in which the force of the blood against the artery walls is too high. Usually, hypertension is defined as blood pressure above 140/90 and is considered severe if the pressure is above 180/120. High blood pressure often has no symptoms but can cause health conditions over time.