Which of the following is NOT a characteristic of Parkinson's disease?

Parkinson's disease is primarily characterized by a combination of motor symptoms, including muscle rigidity, tremors, bradykinesia (slowness of movement), and postural instability. The condition typically leads to a reduction in voluntary movement rather than an increase, making excessive movement an uncommon feature.

Muscle rigidity refers to stiffness and resistance to movement in the muscles, and tremors often occur at rest, which are hallmark signs of the disease. Bradykinesia is characterized by a gradual loss of spontaneous movement, contributing to the difficulty in initiating and performing movements. These motor symptoms illustrate the nature of Parkinson's disease, which does not involve excessive movement. Hence, identifying excessive movement as not characteristic of this condition underscores a fundamental understanding of the motor dysfunction associated with Parkinson's.