Which of the following is a common symptom of Parkinson's disease?

Tremors are a hallmark symptom of Parkinson's disease and typically manifest as involuntary shaking, often starting in the hands, which can occur when the person is at rest. These tremors may increase with movement or stress and significantly impact the individual's daily activities. Parkinson's disease is characterized by a reduction in dopamine production in the brain, which affects motor control and leads to symptoms such as tremors, rigidity, and bradykinesia (slowness of movement). Understanding the nature of these symptoms is crucial for identifying and managing the disease effectively. Other symptoms, though present in various neurological conditions, do not specifically align with the core features of Parkinson's disease.