Sleepwalking is a disorder that causes people to get up and walk while they're asleep. It usually happens when a person is going from the deep stage of sleep to a lighter stage or into the awake state. The sleepwalker can't respond during the event and usually doesn't remember it. In some cases, he may talk and not make sense.
When someone sleepwalks, they might quietly walk around their room. Or they might run or attempt to "escape." Typically, the sleepwalker's eyes are open with a glassy stare as he roams the house. If you question him, he'll be slow to respond or not respond at all. When you get him back to bed without waking him up, he usually won't recall the event. Older children may wake up more easily at the end of a sleepwalking episode.
VBS was reported by 1.7% (95% confidence interval: 1.5% to 1.8%) of the sample. VBS was higher in subjects younger than 35 years. During VBS episodes, 61.5% of VBS subjects reported vivid dreams and 24.6% hurt themselves or someone else. Only 12.3% of them consulted a physician for these behaviors. In 71.3% of cases, VBS were associated with other parasomnias (highest odds of VBS for sleepwalking and sleep terrors). Family history of VBS, sleepwalking and sleep terrors was reported more frequently in VBS than in non-VBS subjects with odds of 8.5, 2.2 and 3.0 respectively.