What generally characterizes anxiety-related sleep issues?

Anxiety-related sleep issues are typically characterized by difficulties in initiating sleep, which often stems from excessive worry or racing thoughts. This restlessness can make it challenging for individuals to settle down and relax enough to fall asleep, leading to prolonged periods of wakefulness before finally drifting off.

In contrast, while sleepwalking episodes, excessive daytime sleepiness, and nightmares or vivid dreams can occur in various sleep disorders, they are less directly associated with anxiety. Sleepwalking is more commonly linked to sleep disorders like somnambulism or other disruptions in the sleep cycle, rather than anxiety itself. Excessive daytime sleepiness may also arise from other conditions, such as sleep apnea or narcolepsy. Nightmares and vivid dreams can occur in various contexts, including stress but are not exclusive to anxiety-related issues.

Thus, the most appropriate characterization of anxiety-related sleep issues centers around the difficulties with sleep onset, which aligns with problems falling asleep.