Parkinson disease means: Parkinson’s disease is a slowly progressing neurologic disorder that causes a rigid face and a slowing rate of movement. While most patients over 40 are found, at least 10% are younger. Also called shaking palsy and paralysis agitans.
(in Medical Dictionary)

What else does Parkinson disease mean?

It is clear now that Parkinson’s disease can be viewed from a heterogeneous genetic perspective. This isn’t one disease, it can affect a variety of other diseases. All forms of Parkinson’s disease appear to involve genes. Also see: Parkinson’s disease gene.
(in Medical Dictionary)