News Michael J. Fox: Do you have Parkinson’s? New test is ‘breakthrough’ in diagnosing disease. May 2, 2023Michael J. FoxComments Off on Michael J. Fox: Do you have Parkinson’s? New test is ‘breakthrough’ in diagnosing disease. It's no exaggeration to say we've entered a new era in Parkinson's research. We can begin to answer questions that have long stumped scientists.