Moderator note: This thread has been split from this thread: Petition: Per Fink Should Not Spread Lies about ME at Columbia University! We have no biomarker for Parkinsons disease, the is no proven disease mechanism and diagnostic tests are mostly to rule out other diseases. MRIs and spect scans typically cannot show the damage even in severe patients. Yet if anyone where to claim its psychosomatic they would be laughed out of the room. If we are willing to turn a blind eye to people determined to harm us we will get harmed. All that evil needs to succeed is for good people to do nothing.