What condition might be indicated by leg movements during sleep?

Leg movements during sleep are primarily associated with Restless Leg Syndrome (RLS). This condition is characterized by an uncontrollable urge to move the legs, usually accompanied by uncomfortable sensations. Although these movements can also occur in other sleep disorders, the hallmark of RLS is that these movements typically happen during periods of rest or inactivity, particularly in the evening or night, disrupting sleep.

In contrast, the other conditions listed involve different symptoms or features. Sleep-related eating disorder primarily involves episodes of eating while in a sleep state without awareness. Narcolepsy manifests with excessive daytime sleepiness and cataplexy, and is not specifically linked to leg movements during sleep. Delayed Sleep Phase Disorder pertains to a chronic inability to fall asleep and wake up at conventional times, rather than leg movements. Thus, the connection between leg movements and Restless Leg Syndrome makes it the most accurate choice in this context.