Hypertension is the medical term for high blood pressure.
Blood pressure is the measure of the force of blood flowing against artery walls.
A blood pressure reading involves two numbers. The first, the systolic, measures the pressure on your arteries when your heart beats and pushes blood through your circulatory system. The second, the diastolic, measures the pressure on your arteries between beats when your heart is resting. A diastolic reading between 90 and 104 indicates mild hypertension. Moderate hypertension would have a diastolic reading between 105 and 114.