Types of Involuntary Movements: Tremor – rhythmical movements Resting Tremor – e.g. Parkinson's disease: 4-8 Hz facilitated by mental arithmetic or moving contralateral limb Postural Tremor – e.g. Physiological – i.e. "Essential Tremor" facilitated by sympathetic activation: fear, cold, exhaustion Intention Tremor – cerebellar disease intensified by voluntary movement Twitches - irregular, rapid movements Chorea … Continue reading Involuntary Movements