Essential tremor signs and symptoms:
- Begin gradually
- Worsen with movement
- Usually occur in the hands first, affecting one hand or both hands
- Can include a "yes-yes" or "no-no" motion of the head
- May be aggravated by emotional stress, fatigue, caffeine or extremes of temperature
Essential tremor vs. Parkinson's disease
Many people associate tremors with Parkinson's disease, but the two conditions differ in key ways:
- Timing of tremors. Essential tremor of the hands usually occurs when you use your hands. Tremors from Parkinson's disease are most prominent when your hands are at your sides or resting in your lap.
- Associated conditions. Essential tremor doesn't cause other health problems, but Parkinson's disease is associated with a stooped posture, slow movement and a shuffling gait. However, people with essential tremor may sometimes develop other neurological signs and symptoms, such as an unsteady gait (ataxia).
- Parts of body affected. Essential tremor mainly involves your hands, head and voice. Parkinson's disease tremors usually start in your hands, and may affect your legs, chin and other parts of your body.