The state where the blood pressure falls below a pressure reading of 90/60 mmHg is called hypotension. This state is often accompanied with symptoms but not always. Some people can have constant low blood pressure reading without any symptoms and this is then taken to be their normal blood pressure. Only when accompanied with symptoms can hypotension be a threat to health.

The symptoms of low blood pressure are quite easy to recognize. These symptoms not only develop when the blood pressure drops to the stated level of 90/60mmHg, but also if the pressure drops rapidly (e.g. when suddenly standing up from sitting position). These symptoms generally develop when the fall in blood pressure makes the body take action in bringing it up to normal, so that the correct amount of blood is flowing to the brain and all the vital organs. The most common symptoms are:

Symptoms are usually a warning to seek medical help. Occasionally these symptoms can develop without indicating any serious complications, but frequent occurrences can be harmful.