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.
In case of chronically low blood pressure, the following complaints may occur: 1  Tiredness and/or increased sleep requirement. 2  Reduced fitness. 3  Difficulties in concentrating. 4  Listlessness or depressive emotional response. 5  Restlessness and sleep disorders.  Lack of drive and lassitude.