"Parkinson's Disease, A Guide for Patient and Family" by Roger C. Duvoisin, M.D. quotes: "Parkinson's disease does not cause pain that requires a narcotic agent or powerful analgestic drug for relief. A variety of aches and pains do occur, however, and in extreme cases they can be quite distressing..........."The patient may be aware of the muscular rigidity not only as a sense of stiffness but as a tired, aching feeling, persistant soreness, a pain or a cramp." So, I believe that there are aches and pains caused by parkinson's.