Restless leg syndrome is a disorder where a person must move his/her legs to avoid feelings of unpleasantness. In order to be diagnosed with RLS, one must have all of the following symptoms: strong urge to move the legs which one cannot resist; uncomfortable sensations that are referred to as creeping, crawling, itching, or gnawing; symptoms start/become worse when one is resting and/or lying down; symptoms get better when one moves the legs.
RLS affects as many as 10% of Americans, most often in middle-aged adults. Although the cause is unknown, stress definitely makes it worse. Overall, RLS can cause poor sleep quality. This can lead to other issues such as daytime sleepiness, confusion, anxiety, and depression.