Assessing Bradykinesia in Patients

Clinical Assessment Tests

• The Unified Parkinson's Disease Rating Scale Part III (UPDRS-III) is the gold standard clinical tool for assessing bradykinesia, containing 14 items designed to evaluate cardinal motor findings in Parkinson's disease including tremor, rigidity, bradykinesia, and postural instability, as recommended by the American Academy of Neurology 2
• The American College of Neurology suggests that finger tapping tests, hand movement assessments, and specialized motion analysis using wearable sensors are effective tests for assessing bradykinesia 1

Distinguishing Features from Other Conditions

• Bradykinesia must be differentiated from hypokinesia (reduced amount of movement) and other parkinsonian syndromes such as progressive supranuclear palsy (PSP), which may present with vertical gaze palsy alongside bradykinesia, according to the International Parkinson and Movement Disorder Society 3, 1
• The American Academy of Neurology recommends considering corticobasal syndrome when asymmetric bradykinesia is accompanied by alien hand phenomenon 3, 1

Common Pitfalls to Avoid

• Failing to distinguish between bradykinesia (slowness of movement) and hypokinesia (reduced amount of movement) can lead to diagnostic confusion, as noted by the European Neurological Society 2
• The American College of Neurology advises against confusing drug-induced parkinsonism with idiopathic Parkinson's disease, as both can present with bradykinesia but have different treatments 1
• Failing to consider that bradykinesia can affect cognitive response time tests, potentially confounding neuropsychological assessments, is a common pitfall, according to the National Institute of Neurological Disorders and Stroke 2