Which of the following is not a core symptom of Parkinsonism?
Movement disorders
Movement disorders in psychiatry
The following definitions need to be learnt.
Akinesia - absence, poverty, or loss of control of voluntary muscle movements. This is seen in severe Parkinson's disease.
Bradykinesia - slowness of movement, core symptom in Parkinson's disease along with tremor and rigidity.
Akathesia - subjective feeling of inner restlessness, most often caused by side effect of neuroleptic medication, often manifests as inability to sit still.
Athetosis - continuous stream of slow, flowing, writhing involuntary movements.
Chorea - brief, quasi-purposeful, irregular contractions that are not repetitive or rhythmic, but appear to flow from one muscle to the next.
Dystonia - sustained muscle contractions cause twisting and repetitive movements or abnormal postures.
Dyskinesia - general term referring to problems with voluntary movements and the presence of involuntary movements.
Myoclonus - Sudden involuntary jerks of a muscle or a muscle group. These are not suppressible.
Parkinsonism - syndrome characterized by tremor, rigidity, and bradykinesia.
Tic - sudden, repetitive, non rhythmic, stereotyped motor movement or vocalization involving discrete muscle groups. These are different to myoclonus as they are suppressible.
Tremor - involuntary, rhythmic, alternating movement of one or more body parts.
Hemiballismus - repetitive, but constantly varying, large amplitude involuntary movements of the proximal parts of the limbs
