A 34-year-old woman reports an uncomfortable urge to move her legs that begins in the evening while she sits watching television, worsens when she lies down, and is relieved temporarily by walking. Examination including neurological assessment is normal. Her haemoglobin is 12 g/dL. What is the most likely diagnosis?
- A Peripheral neuropathy
- B Periodic limb movement disorder
- C Restless legs syndrome ✓
- D Venous insufficiency
Correct answer: C. Restless legs syndrome
Explanation
The four essential features of restless legs syndrome are an urge to move the legs, worsening at rest, worsening in the evening or night, and relief with movement. The normal examination and normal haemoglobin argue against neuropathy and anaemia. Periodic limb movement disorder involves involuntary movements during sleep, not a conscious waking urge relieved by activity.
Reference: Kaplan and Sadock's Synopsis of Psychiatry, 12th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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