Yes, this is an inevitable consequence of the fact that
Parkinson’s mainly affects people over 60. The older you are when you get Parkinson’s,
the more likely you are to already have other medical conditions as well. After
your diagnosis, you will not be immune from getting other illnesses, so every
symptom you have should not be blamed on your Parkinson’s. It can be quite difficult to
sort out the overlapping symptoms but anything new should be discussed with your
doctor and properly investigated. Problems with eyesight, bladder, swallowing
or confusion can all be caused by Parkinson’s, but they can also be caused by
other things for which there are specific, effective treatments.