Low blood pressure is also called diastolic blood pressure. Diastolic blood pressure below 60 mm Hg may cause inadequate blood supply to tissues and organs, but it may also be physiologic and have no discomforting effects.
Diastolic blood pressure is generally considered normal at 60 to 89 mm Hg. Diastolic blood pressure below 60 mm Hg may result in inadequate blood supply to vital organs, causing ischemia and hypoxia. This may be manifested as dizziness, limb weakness, pale skin, and numbness of the hands and feet.
If there is already coronary artery stenosis and the diastolic blood pressure is less than 60 mm Hg, myocardial infarction can be complicated. Severe stenosis of cerebral vessels can cause cerebral infarction with hemiplegia of one limb. If diastolic blood pressure is consistently less than 60 mm Hg, and there is no discomfort or abnormality on repeated examinations, it may be physiologic and no intervention is needed.
If the diastolic blood pressure is less than 60 mmHg on repeated measurements, it is necessary to actively seek medical attention to find out the cause of low diastolic blood pressure and target treatment.