Dysdiadochokinesia
Pronunciation: dis-dye-ad-oh-koh-ki-NEE-see-ah
Impaired ability to perform rapid alternating movements, typically indicating cerebellar dysfunction in neurological assessment.
Full Definition
Dysdiadochokinesia is the inability or impaired ability to perform rapid alternating movements smoothly and accurately, such as rapidly pronating and supinating the forearms or tapping fingers in sequence. This neurological sign indicates dysfunction of the cerebellum or its connections, commonly seen in multiple sclerosis, stroke affecting cerebellar regions, or degenerative cerebellar diseases. In rehabilitation assessment, dysdiadochokinesia is evaluated through standardized tests including rapid alternating hand movements, finger tapping, and toe tapping. The presence of this sign influences therapy approaches, emphasizing coordination training over strengthening exercises.
Usage
Usage note: Complex medical term requiring careful spelling; often shortened to 'impaired rapid alternating movements' in patient documentation.
In Context
- "Severe dysdiadochokinesia bilaterally indicates cerebellar involvement requiring coordination-focused therapy." — neurological examination
- "Dysdiadochokinesia testing reveals significant impairment in rapid alternating hand movements." — physical therapy evaluation