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Essential tremor

Summary of Essential tremor
Essential tremor, also referred to as benign tremor or familial tremor, is one of the most common movement disorders. Its cause is unknown. Essential tremor typically involves a tremor of the arms, hands or fingers but sometimes involves the head, vocal cords or other body parts during voluntary movements such as eating and writing. It is distinct from Parkinson's disease—and often misdiagnosed as such—although some individuals have both conditions. Essential tremor is commonly described as an action tremor (it intensifies when one tries to use the affected muscles) or postural tremor (present with sustained muscle tone) rather than a resting tremor, such as is seen in Parkinson’s, which is usually not included among its symptoms.



Nervous system


Central nervous system disorders
Central and peripheral nervous system disorders
Peripheral nervous system disorders
Autonomic nervous system disorders
Nervous system pathology review

Essential tremor


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High Yield Notes
10 pages

Essential tremor

4 flashcards

USMLE® Step 2 style questions USMLE

1 questions

A 59-year-old man, who is right handed, presents to urgent care due to a tremor in both hands. The patient says that the tremor has developed gradually over the past eighteen years and is most noticeable when performing voluntary movements such as drinking from a cup or writing using a pen. He also is concerned because his 30-year-old daughter appears to be developing a similar tremor.

Physical examination reveals that the tremors are regular and appear at approximately 10 Hz (cycles per second) while the hands are extended. The patient also has a positive Froment sign and speaks with an occasional 'quiver' in his voice.

Based on the patient's history and physical examination, which of the following is the most likely diagnosis?

External References