Panic attacks are periods of intense fear or apprehension that are of sudden onset. Experiencing a panic attack has been said to be one of the most intensely frightening, upsetting and uncomfortable experiences of a person’s life and may take days to initially recover from. Sufferers of panic attacks often report a fear or sense of dying, “going crazy,” or experiencing a heart attack or “flashing vision,” feeling faint or nauseated , a numb sensation throughout the body, heavy breathing (and almost always, hypervetilation), or losing control of themselves. Some people also suffer from tunnel vision, mostly due to blood flow leaving the head to more critical parts of the body in defense.
