Relationship between poor decision-making process and fatigue perception in Parkinson's disease patients.

Background: Fatigue is a common non-motor symptom in Parkinson's disease patients. The reasons for its perception are not completely understood. One suggested possibility might be that perceived fatigue is related with abnormal interpretation of somatic symptoms.

The association of apathy with central fatigue perception in patients with Parkinson's disease.

This study was designed to evaluate the association of different apathy conceptual domains with central fatigue perception in Parkinson's disease (PD), taking into consideration other nonmotor symptoms. To this end, 90 consecutive PD patients (66.7% men, mean age 61.