What Are the Causes of Restless Legs Syndrome?
Restless legs syndrome (RLS) is a neurologic movement disorder most commonly characterized by very strong urges to move the legs, usually due to unpleasant leg sensations. These sensations worsen during periods of inactivity and often interfere with sleep. [See also, QR-E-Letter Issue 31, #41.] The following content is adapted from a fact sheet from the National Heart, Lung, and Blood Institute (NHLBI). Primary RLS: In most cases of restless legs syndrome (RLS), no cause can be found. When no cause can be found, the condition is called primary RLS. It is known, however, that primary RLS tends to run in families. People whose parents have RLS are more likely to develop the disorder. This suggests that there may be a genetic link that increases the chance of getting RLS. Secondary RLS: Secondary RLS is RLS that is caused by another disease or condition, or as a side effect of certain medications. Some of the diseases and conditions that can cause RLS are: Iron deficiency (with or without
