You don't realize what you have until it's gone. This sentiment has never meant more to me as it did when I was diagnosed with Parkinson's disease.
It comes on slowly. While you are walking you trip occasionally, you notice that small gestures are slower than they used to be and you're talking to people but you are not making facial expressions when you think you are. These things happened to me. I went to a neurologist and he explained to me what was going on. I had to accept that I had Parkinson's disease.
With Parkinson's disease you manage the symptoms. It is two steps forward and one step back every day. There is no cure! Drive Away Parkinson's Inc. has been established to raise money to help find a cure.