Unlike high blood pressure, low blood pressure should not immediately be a cause for concern unless and until low blood pressure symptoms begin to show up. Low blood pressure diagnosis is heavily dependent on the presentation of known low blood pressure symptoms. Until then doctors generally regard low blood pressure readings as normal. This is because different people can have low blood pressure readings some way lower than other and yet be healthy.
However if a person who normally has higher blood pressure readings and it falls suddenly and there are no symptoms accompanying it, doctors would put such a person under observation. No treatment maybe necessary at this stage. It is generally agreed that blood pressure readings of 90/60 mmHg are low blood pressure readings. However these are just numbers which do nothing to confirm hypotension unless symptoms are present. Low blood pressure is only a concern when accompanied by low blood pressure symptoms. A low blood pressure chart will show the different symptoms associated generally with falling blood pressure readings.