Which triad of symptoms is commonly associated with Parkinson's disease?

The triad of symptoms associated with Parkinson's disease encompasses tremor, rigidity, and bradykinesia, which are key motor symptoms characteristic of this neurological disorder.

Tremor typically presents as a resting tremor, often first noticed in one hand, and is most pronounced when the affected individual is at rest. Rigidity refers to the increased muscle tone leading to stiffness and resistance to passive movement. Bradykinesia, or slowness of movement, significantly impacts daily activities and can manifest as difficulty initiating movement or a decreased ability to perform tasks quickly.

Together, these three symptoms are central to the diagnosis of Parkinson's disease and help distinguish it from other conditions that may present with different symptomatology. The other options listed feature symptoms not primarily linked to Parkinson's disease, such as cognitive alterations or general systemic complaints, rather than the specific motor symptoms unique to this condition.