Collective Insights on Collective Impact. Sponsored and curated by the Collective Impact Forum, Collective Insights on Collective Impact, which appears in Stanford Social Innovation Review's fall issue, shares cutting-edge...
Essential tremor is a neurological disorder that causes the hands, head, trunk, voice, or legs to shake rhythmically. It is often confused with Parkinsonâs disease. The cause of essential tremor is unknown, but for most people who have it, the condition seems to run in their family.
The symptoms of essential tremor include shaky voice, head nodding, no tremors during sleep, tremors that worsen when a person is stressed and poor balance. This condition is usually confused with Parkinson's disease, which also has involuntary tremors when a person is not moving. As of January 2015, the main cause of essential tremor is not known but it has been associated with abnormal brain activity that leads to tremor.