It is defined as extreme tiredness, typically resulting from “mental or physical exertion or illness“. Fatigue can also be characterized by simply feeling unnaturally tired or chronically exhausted. There can also be an element of psychological depression that accompanies chronic fatigue. Suffering from fatigue is like having a cloud constantly hanging over one’s head. Physical pain in the neck and back can cause a dramatic lifestyle change, causing mental depression, that in turn can lead to feeling chronically fatigued. It can be treated with a program of treatments. The way fatigue is treated is to diagnose the underlying cause of the condition that is causing one’s pain and immobility. If you have suffered whiplash in an auto accident, chances are you are you are not getting the exercise and enjoyment out of life that you had been accustomed to. Adapting to a new and chronically sedentary and pain-filled life can cause depression, which in turn causes fatigue.