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Secondary Causes of Restless Leg Syndrome

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Updated February 24, 2014

Written or reviewed by a board-certified physician. See About.com's Medical Review Board.

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End-stage Kidney Disease

RLS is very common among individuals suffering from end-stage kidney disease, especially those who are dependent upon dialysis. The incidence has been reported to range from 6 to 60 percent. It is unclear what may be contributing to RLS in this group. Anemia, iron deficiency, or even low parathyroid hormone levels may have a role based on various studies. In some cases, treating anemia with erythropoietin therapy or iron replacement has been effective.

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