Tremor: Not Every Shake Is Parkinson’s

Most Tremor Is Not Parkinson’s

People often fear that any tremor means Parkinson’s disease, but the most common cause is essential tremor — a distinct, usually benign condition. A key difference: essential tremor typically appears when the hands are doing something (holding a cup, writing), while the classic Parkinson’s tremor occurs at rest. Essential tremor often runs in families and can affect the hands, head or voice.

Other Causes Worth Knowing

Tremor can also result from an overactive thyroid, anxiety or stress, excess caffeine, low blood sugar, or as a side effect of certain medications. These are important because they are often treatable by addressing the underlying cause. A physiological fine tremor that everyone has can become noticeable with tiredness or stimulants — usually harmless.

When to See a Neurologist

See a neurologist if tremor is persistent, worsening, interferes with daily tasks like eating or writing, is associated with other symptoms such as stiffness or slowness, or is causing distress. Correctly identifying the type of tremor matters, because treatment differs — and for disabling essential tremor or Parkinson’s tremor not controlled by medication, options including deep brain stimulation can be highly effective.

Common Questions