A calculation of outcome of a disease and termination of an illness is always a part of intervention in every sickness or malady. Prognosis of Parkinson’s disease comprises the length of time for improvement, probability of complications and increase abnormality in affected area of the disease. The most important part of prognosis in Parkinson’s includes the prospect's recovery and survival rate. Unpredictable conclusion my take place in any issue of disease process, but the most horrible part is when the body stops recovering itself which contributes to the number of death rates.

Parkinson’s disease is not considered to be a deadly disease, but a steady decline can happen in a range of time. The normal life expectation of a person with Parkinson's disease is commonly lower than of those people who do not have That illness. In the delayed phase of the disease, complications such as choking, pneumonia, and falls can bring fatality and death.

The continue progress of indications of symptoms in Parkinson's disease may take place in 20 years or more.  There have been some instances where various people have progressed more rapidly.  No one can detect what kind of complications will arise for every individual suffering from the disease but with appropriate treatment, majority of people with Parkinson's disease will be capable of living a productive life for many years after prognosis.

Studies have shown that mortality rate was drastically decreased and existence of prospect with Parkinson's disease decreased among nursing home patients when compared to community residence patients. The most frequently used method for describing and explaining how the symptom of Parkinson's disease progress is known as Hoehn and Yahr scale. A different scale is also applied for measuring the affirmative improvement of a person with Parkinson's disease. This is what we call Unified Parkinson's Disease Rating Scale (UPDRS). This scale is much complex because it has multiple ratings that evaluates motor function and also mental capability, performance, mood and activities of everyday living.  Either of the two scales is used to determine an individual’s development from Parkinson's disease and much importantly the treatment and development if an individual is suffering from the said illness. The search for an effective remedy is useless without an effective prognosis.