akineisia
Pronunciation: ay-ki-NEE-zhuh
Complete or partial loss of muscle movement, often medication-induced.
Full Definition
A neurological condition characterized by the absence or severe reduction of voluntary muscle movement. In psychiatric contexts, akinesia frequently occurs as an extrapyramidal side effect of antipsychotic medications, particularly typical neuroleptics. Patients may present with extreme slowness or inability to initiate movement, which can be mistaken for catatonic symptoms or severe depression. This condition requires careful assessment to distinguish from other movement disorders and may necessitate medication adjustments.
Usage
Usage note: Often confused with psychomotor retardation; akinesia specifically refers to movement absence, not cognitive slowing.
In Context
- "The patient's akinesia improved significantly after switching from haloperidol to an atypical antipsychotic." — Clinical assessment report
- "Nursing staff noted marked akinesia during morning rounds, prompting immediate psychiatric consultation." — Progress note