Essential tremor is a neurological (nervous system) disorder characterised by the involuntary shaking or trembling of particular parts of the body, usually the head and hands. The tremors typically worsen when the hands are being used (kinetic tremor), and reduce significantly or stop altogether when the hands are resting. …
https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/essential-tremor

