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Published on: February 19, 2020
Restless legs syndrome in chronic inflammatory demyelinating polyneuropathy
Yusuf A Rajabally1, Rahul S Shah
1Department of Neurology, Neuromuscular Clinic, University Hospitals of Leicester, Leicester General Hospital, Leicester LE5 4PW, UK. yusuf.rajabally@uhl-tr.nhs.uk
Abstract:
The prevalence of restless legs syndrome (RLS) is unknown in chronic inflammatory demyelinating polyneuropathy (CIDP). We prospectively studied 28 patients with CIDP. Prevalence of RLS in CIDP was ascertained by face-to-face interview using validated criteria and compared with that in 28 age- and gender-matched controls. Eleven (39.3%) CIDP patients were diagnosed with RLS, compared with 2 (7.1%) controls (P < 0.01). A significant correlation was ascertained between presence of RLS and lower limb weakness, functional disability, and summated compound muscle action potential (CMAP). The prevalence of RLS in CIDP was significantly higher than in controls in our study population, approaching 40%. Screening for RLS in CIDP patients may be appropriate, particularly in those with weakness, disability, and motor axonal loss in the lower limbs. Our findings may otherwise suggest the existence of peripheral components to the pathophysiology of RLS in patients with CIDP.
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