Pallesthesia refers to the sensation of mechanical vibration on or near the body. Vibration sense may be lost as a result of a number of lesions to the nervous system, often in conjunction with other deficits. The word "pallesthesia" is derived from the Greek pallein, meaning "to shake".
Pallesthesia may be tested for using a vibrating mechanical tuning fork, placed on a bony prominence.
- Dorland's Medical Dictionary.