Rheumatoid Arthritis and Tremors: Uncommon Association

Tremors and muscle jerks are not typical features of rheumatoid arthritis (RA). RA primarily causes symmetric inflammatory polyarthritis (joint pain, swelling, morning stiffness >1 hour, fatigue).

If a patient with RA develops tremor, consider:

• Medication side effects (e.g., bronchodilators, steroids, antidepressants)
• Comorbid essential tremor or Parkinsonism
• Thyroid dysfunction (hyperthyroidism)
• Electrolyte imbalance, hypoglycemia
• Cervical myelopathy (atlantoaxial subluxation in longstanding RA)
• Functional neurological disorder

Evaluation: medication review, TSH, electrolytes, cervical spine imaging if myelopathic signs, neurology referral. Treat underlying cause; RA therapy unchanged unless drug-induced.