Question....I have been suffering from PCS from two concussions I recieved last year. Since I have gotten those concussions, I have developed this shortness of breath every once in a while. I have never passed out or hyperventilated from it, but it was never there before the concussions. I have gotten an EKG of my heart and it was fine and a chest X ray that was normal. I have had anxiety and hypochondria my whole life, but I am just curious to know if shortness of breath is a symptom or no?