Similiarities Parkinson and and alzeihmer usually occur after 50 years of age and both are neuro degenerative disease they destroy neural system thus cause in loss of memory and other neural functions. Another thing that is common between them is that they are progressive disease they get worse over time.
Diffferences PARKINSON
Parkinson’s disease is primarily a movement disorder that can eventually result in memory problems and dementia in about 50% of patients. Many individuals with Parkinson’s will never have memory problems during the course of