bradykinesia
Pronunciation: /ˌbreɪdɪkɪˈniːziə/
Slowness of movement that is a cardinal motor symptom of Parkinson's disease and related neurological conditions.
Full Definition
Bradykinesia, literally meaning 'slow movement,' is one of the cardinal motor symptoms of Parkinson's disease, along with rigidity, tremor, and postural instability. This symptom manifests as a general slowness in the initiation and execution of voluntary movements, progressive reduction in movement amplitude during repetitive tasks, and difficulty with simultaneous movements. Bradykinesia can affect various motor functions including walking, writing, facial expressions, and speech. In neuropsychiatric contexts, bradykinesia may also be observed as a side effect of antipsychotic medications (extrapyramidal symptoms) or as part of catatonic presentations. Accurate assessment and documentation of bradykinesia is crucial for monitoring disease progression and treatment response.
Usage
Usage note: Distinguish from akinesia (absence of movement) and rigidity (muscle stiffness).
In Context
- "The neurological examination revealed significant bradykinesia, with the patient requiring 15 seconds to complete finger tapping." — Movement disorder clinic note
- "Bradykinesia improved markedly following optimization of the patient's dopaminergic therapy." — Treatment response evaluation