When the BP drops lower than 90/60 mm of hg it is called hypotension. Low blood pressure causes obstruction in the flow of blood, which carries oxygen and nutrition to the vital organs, leading to shock that can be fatal. If Low BP does not show any symptoms, it is usually not threatening. If long term hypotension is followed by symptoms like nausea, dizziness, fatigue, pale skin, blurring of sight, fainting, dehydration and depression, it may be an underlying cause for heart, neurological and endocrine dysfunction. Hypotension may also be the reason for cardiac failure, cardiac disorders, pregnancy, liver disorders and heat stroke.
HOW IS LOW BLOOD PRESSURE DIAGNOSED?
10% to 20% people over the age of 65 years are estimated to have postural hypotension.