Neuron Structure. Your brain is made of approximately 100 billion nerve cells, called neurons. Neurons have the amazing ability to gather and transmit electrochemical signals -- think of them like the gates and wires in a computer.
Most doctors will only consider chronically low blood pressure as dangerous if it causes noticeable signs and symptoms, such as: 1  Dizziness or lightheadedness. 2  Nausea. 3  Fainting (syncope)  Dehydration and unusual 1  thirst. Dehydration can sometimes cause blood pressure to drop.  Lack of 1  concentration. Blurred vision.  Cold, clammy, pale skin.
However, we donât often mention low blood pressure, or hypotension, with the same tone of caution. While lowering blood pressure may be a goal for those at risk of heart disease and strokeâlow blood pressure can indicate an underlying health issue such as a heart problem, thyroid condition, or a neurological disorder, and begin with symptoms of dizziness, nausea, and scary bouts of fainting.