Introduction to Essential Tremor Diagnosis
Essential tremor (ET) is a neurological disorder characterized by involuntary shaking or trembling.
ET is the most common movement disorder, affecting millions worldwide.
Diagnosis is typically made based on medical history, physical examination, and observation of tremor characteristics.
Tremors usually begin in one limb, often the hands or arms, and can progress to other areas.
ET tremors are typically action tremors, occurring when the affected limb is moved or used.
Tremors may be postural, occurring when the limb is held in a specific position.
ET tremors are usually bilateral, affecting both sides of the body.
Tremor frequency and amplitude can vary, but typically range from 4-12 Hz.
ET tremors can be exacerbated by stress, anxiety, and fatigue.
Physical examination includes assessment of tremor characteristics, such as frequency, amplitude, and distribution.
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