I have been diagnosed with Parkinson's Disease for two years. Previously, I had arthritis throughout my body with a total right hip replacement and degenerative disc disease. Recently, I was diagnoised with lymphoma. It is very difficult to attribute some of the symptoms to one specific diagnosis. Often pain is associated with all three while nausea is attributed to lymphoma and PD. Fatigue, well that goes to all three too. I am pretty much retired and receive full social securitiy disabiliity. I have had REM Sleep Behavior Disorder for many years that a neurologist diagnosed.