Early non-motor symptoms can affect your senses, gastrointestinal system, and sleep. To make a definitive diagnosis, doctors look for the three primary motor symptoms of Parkinson's disease ...
Parkinson's disease is a condition ... and monotonous ahead of many other symptoms. These changes were often much earlier - even decades - before any of the motor (or movement) related issues.
The charity lists non-motor symptoms of Parkinson's as pain ... The NHS explains that Parkinson's disease is caused by a loss of nerve cells in a part of the brain called the substantia nigra ...