Health Tip: Spotting a Tremor

(HealthDay News) - A tremor is an uncontrolled, involuntary, rapid movement of a muscle, and can be caused by a medication or certain conditions such as Parkinson's disease.

Here are common signs of tremor, courtesy of the U.S. National Library of Medicine:

• Frequent, uncontrolled shaking of the hands, eyelids, head, arms or muscles.

• Shaking on one side of the body, or with a different severity on each side of the body.

• Shaking that occurs occasionally, intermittently or temporarily rather than constantly.

• Nodding or quivering of the head.

• Shaking that stops during sleep.

• Worsening of shaking symptoms during stress.

• A shaking or quivering sound to the voice.