Parkinson's disease develops gradually, often starting with a barely noticeable tremor in just one hand. But while tremor may be the most well-known sign of Parkinson's disease, the disorder also commonly causes a slowing or freezing of movement.
Friends and family may notice that your face shows little or no expression and your arms don't swing when you walk. Speech often becomes soft and mumbling. Parkinson's symptoms tend to worsen as the disease progresses.
While there is no cure for Parkinson's disease, many different types of medicines can treat its symptoms. In some cases, your doctor may suggest surgery.