It is best understood as a physiological state rather than a disease. Hypotension is the opposite of hypertension, which is high blood pressure. Symptoms may include dizziness, lightheadedness, confusion, feeling tired, weakness, headache, blurred vision, nausea, neck or back pain, an irregular heartbeat or feeling that the heart is skipping beats or fluttering, and fainting. However, in practice, blood pressure is considered too low only if noticeable symptoms are present. A systolic blood pressure of less than 90 millimeters of mercury (mmHg) or diastolic of less than 60 mmHg is generally considered to be hypotension. Blood pressure is indicated by two numbers, the systolic blood pressure (the top number) and the diastolic blood pressure (the bottom number), which are the maximum and minimum blood pressures, respectively. Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps out blood. Systolic blood pressure less than 90 mmHg is considered hypotension (low blood pressure)ĭizziness, clumsiness, giddiness, headaches, lightheadedness, fatigue, nausea, blurred vision, shakiness, breathlessness, increased thirst, irregular heartbeat, chest pain, fever, seizures Image showing patient having blood pressure checked.
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