Low blood pressure, or hypotension, occurs when a person's blood pressure measures below 90 for systolic and 60 for diastolic, according to WebMD. Having just one number below these given figures is enough for a person to have hypotension.
Dehydration sometimes causes low blood pressure, according to Mayo Clinic. Dehydration can lead to a life-threatening condition known as hypovolemic shock. The low blood volume reduces the oxygen supply to tissues and, if untreated, can cause death. Other causes include...
If a person has a blood pressure reading that is 85/55 millimeters of mercury or lower and experiences dizziness, fatigue or fainting spells, then this can be indicative of low blood pressure or hypotension, states the American Heart Association. Some other symptoms ass...
Most experts define low blood pressure as a reading lower than 90 for systolic pressure and lower than 60 for diastolic pressure, according to Mayo Clinic. Only one of the numbers needs to be in the low range for the overall blood pressure reading to be considered low.
According to the American Heart Association, effects or symptoms of low blood pressure can include dizziness or lightheadedness; fainting; lack of concentration; blurred vision; dehydration; nausea; cold, clammy skin; shallow, rapid breathing; fatigue and depression. In...
Low blood pressure, or hypotension, is not normally a cause for concern, unless the individual has other symptoms. Hypotension is classified as any blood pressure rating lower than 90/60.
Doctors consider blood pressure under 90/60 low, according to WebMD. Low blood pressure often is not serious but can sometimes indicate an underlying condition that requires medical evaluation.