Low blood pressure is known as hypotension. In adults, a blood pressure reading of 90/60 mm Hg or below is often considered hypotension. This can be dangerous because blood pressure that is too low doesn’t supply your body and heart with enough oxygenated blood.
Some potential causes of hypotension can include:
severe infection (septicemia)
Hypotension is usually accompanied by lightheadedness or dizziness. Talk to your doctor to find out the cause of your low blood pressure and what you can do to raise it.