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.
It is a good idea to seek medical attention if low blood pressure is accompanied by any symptoms, such as dizziness or lightheadedness, advised Pande. Symptoms of low blood pressure might include the following: 1  dizziness or lightheadedness. 2  fainting spells. 3  feeling cold and clammy. 4  blurry vision.