
Low blood pressure is known as Hypotension, and high blood pressure is known as Hypertension.
If the blood pressure is too low (Hypotension) then, it may cause Fainting; Blurred or fading vision; Nausea; Fatigue; and Lack of concentration. If the blood pressure is too high then, it may cause heart disease; heart attacks; kidney stones; kidney cysts; poly-cystic kidney;