American Association of Critical-Care Nurses (AACN) Certification Practice Test

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

1. Asymmetric resting hand tremor

2. Muscle weakness

3. Bradykinesia

4. Postural instability

The correct answer is: Muscle weakness

In the context of Parkinson's disease, symptoms are typically categorized into motor and non-motor functions. Key motor symptoms include bradykinesia, postural instability, and tremors, such as the asymmetric resting hand tremor. Bradykinesia refers to the slowness of movement, while postural instability involves difficulties with balance and coordination. Muscle weakness, on the other hand, is not commonly recognized as a core symptom of Parkinson's disease. While individuals with Parkinson's may experience weakness, it is often the result of the disease's progression, muscle rigidity, and reduced physical activity rather than a direct symptom of the disease itself. This distinction is important because muscle weakness can occur in various neurological conditions and does not specifically characterize Parkinson's disease. Therefore, identifying muscle weakness as not being a primary symptom aligns with the established understanding of the disease, making this choice correct.