What is one of the diagnostic criteria for Restless Legs Syndrome?

One of the diagnostic criteria for Restless Legs Syndrome (RLS) is the presence of an uncontrollable urge to move one's legs, often accompanied by uncomfortable or pleasurable sensations. This urge is typically triggered by rest or inactivity, and individuals experience a compelling need to move their legs in order to alleviate this discomfort. The sensations can vary from person to person and may include feelings such as tingling, crawling, or aching, which are primarily felt when sitting or lying down.

In the context of diagnosing RLS, this criterion is essential because it encapsulates the fundamental experience of those affected by the condition. Unlike other symptoms that might emerge at different times of day or during various activities, the uncontrollable urge specific to inactivity is a characteristic that differentiates RLS from other movement disorders.

The other potential diagnostic criteria focus on aspects such as the timing of the symptoms in relation to activity and rest. However, these are subsequent considerations to understand the overall pattern of the disorder rather than the primary defining feature. Hence, the urge to move and the associated sensations are central to identifying RLS.