Frequently in conditions like post concussion syndrome or other physically traumatic events, there were shearing forces inside the brain that affected the vestibular system. The resulting vestibular damage might cause a patient to feel dizzy, nauseous, have a really hard time reading, or they might experience some autonomic changes (feeling more anxious or nervous than normal).

Our bodies require oxygen in order to function. This is probably not a surprising statement to you since we learn about it in grade school. What most people do not know is that the amount of oxygen in our body is limited by a number of factors like red blood cell count and lung capacity.