| essential tremor; tremor, familial; tremor, heredofamilial | อาการสั่นไม่ทราบเหตุ [แพทยศาสตร์ ๖ ส.ค. ๒๕๔๔] |
| essential tremor | (n) tremor of unknown cause (usually of the hands and head) that develops in older people; often mistaken for Parkinsonism but is not life-threatening and can usually be kept under control |