If asked, can you differentiate between being tired and suffering fatigue? There is in fact a huge difference and the causes are not the same. You may have slept a good six hours at night, but awake still feeling tired. Fatigue is as if someone has removed your batteries, and sometimes the fatigue is so bad I feel as if I could collapse. This is when I usually look extremely pale and unwell, prompting my husband to tell me to go and rest. Even though I may lay down in bed, unable to fall asleep, the mere fact of resting in bed, one would have thought should revitalize me, but it doesn't. I get up and the fatigue is still present.
Every activity takes energy, and as strange as this may sound, even something as simple as breathing, a Parkinson's patient expends more energy than a healthy individual. This is due to Parkinson's affecting the muscles in the chest and diaphragm. Every simple task requires a great deal of effort on the part of the Parkinson patient. Fatigue is often dismissed by doctors and not much attention is paid to this debilitating symptom, for it is far less visually disturbing than dyskinesia or poor gait. Yet many patients find fatigue is one of the most disruptive symptoms of Parkinson's.