<prompt> Which of the following is the most likely finding in a 79-year-old woman with Parkinsons disease?constant fine tremormuscle atrophyakinesiapupillary constriction  <response>: The characteristic triad in Parkinsons disease Tremor, Rigidity, Akinesia has been expanded to include Postural instability. This forms the mnemonic TRAP. Autonomic instability is also common. Findings on examination also include masklike facies, dysarthria, stooped posture, and abnormal gait. 