akinetic rigid syndrome
A movement disorder characterized by both severe reduction of movement (akinesia) and muscle stiffness (rigidity). Most commonly seen in Parkinson's disease and related conditions.
Full Definition
Akinetic rigid syndrome represents a constellation of motor symptoms where patients exhibit profound difficulty initiating and executing movements combined with increased muscle tone throughout the body. This syndrome is the hallmark of Parkinson's disease but can also occur in other parkinsonian disorders, drug-induced parkinsonism, and certain neurodegenerative conditions. The akinetic component manifests as slowness of movement, difficulty with fine motor tasks, and reduced spontaneous movement, while rigidity presents as resistance to passive movement of limbs. Editors should note this term describes a syndrome rather than a specific disease entity.
Usage
Usage note: Always lowercase unless beginning a sentence. Hyphenate when used as a compound modifier.
In Context
- "The patient presented with classic akinetic rigid syndrome, requiring evaluation for underlying parkinsonian disorders." — Neurology consultation note
- "Dopaminergic therapy showed modest improvement in the akinetic rigid syndrome symptoms." — Treatment response documentation