Answer:
The most common signs of Parkinson's Disease include tremor, slowed movements (perhaps observed as stiffness), and unstable gait. So this is possible with your father. Speech difficulty, however, is less common and may suggest the presence of another neurological condition that may look like Parkinson's Disease.
It is best to have him seen by a neurologist for a thorough history, examination and appropriate blood testing and imaging.
It is best to have him seen by a neurologist for a thorough history, examination and appropriate blood testing and imaging.