Approach to Hand Tremor
Essential Tremor • Parkinson's Disease • Cerebellar Tremor • MRCP (UK) PACES
A structured MRCP (UK) PACES approach to a patient presenting with hand tremor. Learn how to classify tremor, distinguish essential tremor from Parkinson's disease, recognise cerebellar and metabolic causes, and investigate patients using a logical clinical approach.
At a Glance
Red Flags
PACES Approach
Hand Tremor Framework
Parkinson's Disease
Essential Tremor
Thyrotoxicosis
Drug-induced
Essential Tremor
Cerebellar Disease
Hepatic Encephalopathy
Hypercapnia
Look for associated neurological signs
Common Causes of Hand Tremor
Overview
Hand tremor is a common neurological presentation encountered in MRCP (UK) PACES. The first priority is to classify the tremor according to whether it occurs at rest, with posture, during movement or at the end of a goal-directed action. Careful history taking, targeted neurological examination and review of medications usually identify the underlying cause. Essential tremor is the most frequent diagnosis, but Parkinson's disease, cerebellar disorders, metabolic abnormalities, drug-induced tremor and Wilson's disease should always be considered where appropriate. :contentReference[oaicite:0]{index=0}
Structured History
Tremor Analysis
- Age at onset and duration of tremor
- Gradual or sudden onset
- Unilateral or bilateral involvement
- Hands, head, voice or legs affected
- Occurs at rest, on posture or during movement
- Progression over time
Aggravating & Relieving Factors
- Stress or anxiety
- Fatigue or sleep deprivation
- Caffeine intake
- Alcohol (improvement suggests essential tremor)
- Exercise or emotional stress
Associated Symptoms
- Slowness of movement or stiffness
- Difficulty with handwriting or fine motor tasks
- Falls, imbalance or gait disturbance
- Speech or swallowing difficulty
- Hyperthyroid symptoms such as weight loss, heat intolerance and palpitations
- Family history of tremor or neurological disease
Drug History
- Lithium
- Salbutamol
- Theophylline
- Sodium Valproate
- Tacrolimus or Ciclosporin
- Antipsychotics
- Thyroxine excess
- Alcohol or recreational drug use
Examination
- Observe the patient at rest for spontaneous tremor
- Assess resting tremor with hands supported
- Assess postural tremor with arms outstretched
- Assess action and intention tremor using finger–nose testing
- Look for head or voice tremor
- Assess handwriting and Archimedes spiral
- Look for bradykinesia, rigidity and reduced arm swing
- Perform cerebellar examination including gait assessment
- Examine the thyroid for thyrotoxicosis
- Screen for Kayser–Fleischer rings in young patients with atypical tremor
Differential Diagnosis
Investigations
Baseline Investigations
- Full blood count
- Blood glucose
- Renal function and electrolytes
- Liver function tests
- Vitamin B12
- Thyroid function tests
Specific Investigations
- Serum ceruloplasmin and 24-hour urinary copper in young patients
- Drug levels where appropriate (e.g. lithium)
- Toxicology screen if indicated
Imaging
- MRI brain if cerebellar disease or structural pathology is suspected
- DaTscan when the diagnosis of Parkinsonism remains uncertain
Diagnosis
Diagnosis Depends on Tremor Classification
The diagnosis is reached by first determining whether the tremor is resting, postural, action or intention. This clinical classification, combined with neurological examination and targeted investigations, usually identifies the underlying disorder. Essential tremor is the most common cause, but Parkinson's disease, cerebellar disease, metabolic disorders and drug-induced tremor should always be considered.
Management
Explaining to the Patient
"Several different conditions can cause hand tremor. The most important step is to identify the type of tremor and look for associated neurological or medical conditions. We may arrange blood tests, review your medications and, if necessary, perform brain imaging to determine the underlying cause. Treatment depends on the diagnosis, and many patients achieve good symptom control with medication or other therapies."
Examiner's Corner
How do you differentiate Essential Tremor from Parkinson's Disease?
- Essential Tremor: Typically bilateral, postural or action tremor, often improves with alcohol and may have a positive family history.
- Parkinson's Disease: Usually begins asymmetrically with a resting tremor and is associated with bradykinesia, rigidity and reduced arm swing.
Which medications commonly cause tremor?
- Lithium
- Salbutamol and other β₂-agonists
- Theophylline
- Sodium valproate
- Tacrolimus and ciclosporin
- Excess thyroxine
- Selective serotonin reuptake inhibitors (SSRIs)
When should Wilson's Disease be suspected?
- Young patient with tremor or other movement disorder.
- Associated dystonia, dysarthria or psychiatric symptoms.
- Abnormal liver function tests.
- Kayser–Fleischer rings on eye examination.
- Confirm with serum ceruloplasmin and 24-hour urinary copper.
Common Viva Questions
- How do you classify tremor?
- What are the causes of postural tremor?
- Why does alcohol improve essential tremor?
- When is a DaTscan useful?
- Which patients require brain MRI?
- What are the treatment options for essential tremor?
- When should deep brain stimulation be considered?
Important Clinical Pearls
- Always classify the tremor before considering the diagnosis.
- Medication review is an essential part of the assessment.
- Essential tremor commonly affects the hands, head and voice.
- Parkinson's disease is defined by bradykinesia plus either rigidity or resting tremor.
- Young patients with atypical tremor should be screened for Wilson's disease.
Pathfinder Pearls
Common Pitfalls
- Diagnosing essential tremor without first classifying the tremor.
- Failing to look for bradykinesia or rigidity.
- Overlooking medication-induced tremor.
- Ignoring hyperthyroidism as a reversible cause.
- Missing Wilson's disease in younger patients.
- Requesting neuroimaging before completing a thorough neurological examination.
- Treating symptoms without identifying the underlying diagnosis.
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