Low blood pressure is known as hypotension medically. Some experts say it ranges lower than 90 mm Hg systolic or 60 mm Hg diastolic. But, this is just an approximate value and can be normal for some people. So, it is essential to consider symptoms along with these ranges.
When our heart beats, it pumps blood to arteries, which carry blood from the heart to the different parts of the body. Blood pressure is the pressure of blood running against the artery walls. It varies in different ages, sex, and timings of the day.
A person with low blood pressure can feel dizziness & fainting because the brain gets insufficient blood supply. It can also cause tiredness, low concentration, or nausea.
The primary causes behind this condition can be dehydration, blood loss, side effects of some medication, pregnancy, heart stroke, etc. It is essential to rule out the cause behind it for a better cure.