There are no tests that show that you have Parkinson's. Your doctor will base a diagnosis on your symptoms, medical history and a detailed physical examination.
They will ask about your symptoms. They may also ask you to do some simple mental or physical tasks, such as moving or walking around.
It can be hard to diagnose Parkinson’s in the early stages because symptoms are usually mild at first. If your doctor thinks you might have Parkinson's, they will refer you to a specialist. This will usually be a neurologist (a specialist in conditions affecting the brain and nervous system) or a geriatrician (a specialist in conditions affecting older adults).