Types
What Do You Know About Alzheimer Disease?
Find out more about this degenerative disease of the brain by taking this quiz.
Author: Floria, Barbara
Online Medical Reviewer: Tara Novick BSN MSN
Online Medical Reviewer: Trevino, Heather, BSN, RNC
Date Last Reviewed: 09/01/2025
© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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Essential Tremor (ET)
Essential tremor (ET) is a neurological disorder. It causes your hands, head, trunk, voice, or legs to shake rhythmically. It is often confused with Parkinson disease. It is most common in people older than age 65.
