Parkinson's disease is a progressive disorder of the nervous system
that affects movement. It develops gradually, sometimes starting with a
barely noticeable tremor in just one hand. But while a tremor may be the
most well-known sign of Parkinson's disease, the disorder also commonly
causes stiffness or slowing of movement.
In the early stages of Parkinson's disease, your face may show little
or no expression, or your arms may not swing when you walk. Your speech
may become soft or slurred. Parkinson's disease symptoms worsen as your
condition progresses over time.
Although Parkinson's disease can't be cured, medications may markedly
improve your symptoms. In occasional cases, your doctor may suggest
surgery to regulate certain regions of your brain and improve your