| | Definition: | | Low blood pressure or a sudden drop in blood pressure. A person rising quickly from a sitting or reclining position may have a sudden fall in blood pressure, causing dizziness or fainting. While most people have normal systolic pressure above 100 mmHg and diastolic pressure above 50 mmHg, blood pressures lower than these numbers are still regarded as normal for some individuals whose normal blood pressures are low. |
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