"method of reducing the rate of progression of parkinson's disease in an early stage parkinson's disease patient, method of reducing the rate of progression of parkinson's disease, method of delaying the need for symptomatic antiparkinsonian therapy in a patient of early-stage parkinson's, risk-reduction method for a parkinson's disease patient requiring antiparkinsonian therapy, early-stage parkinson's disease reduction method, functional-decline method for a patient with Parkinson's disease, a patient's treatment method that displays early signs of parkinson's disease, fatigue reduction meth
A method for modifying Parkinson's disease by periodically administering a pharmaceutical composition comprising a therapeutically effective amount of rasagiline or a pharmaceutically acceptable salt of rasagiline to the patient, thereby modifying the disease. The method includes reducing the rate of progression； delaying the need for symptomatic anti-Parkinsonian therapy； reducing the risk of a Parkinson's disease patient requiring symptomatic anti-Parkinsonian therapy； and reducing the functional decline.
