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.
There may not be a bigger problem at hand. You will need to ascertain if the symptoms point to dangerously low blood pressure. Generally the symptoms include dizziness, lightheadedness, unsteadiness, dimming or blurring of vision, weakness, fatigue, nausea, cold, clammy skin, fainting, and pale skin.