Sleepwalking is a sleep disorder effecting an estimated 10 percent of all humans at least once in their lives. This widespread phenomenon varies in its intensity and frequency. While most sleepwalking incidents are short and not dangerous, some can involve self-injury and are much more dangerous for the sleeper. Also, most interestingly, the disorder seems to stem from many different sources, not from one definable cause such as a chemical imbalance. While it is predominantly pre-adolescents who suffer from somnambulism, it is also observed in adults, although the frequency and severity of incidents increase with age. The source of the disorder was once thought to be entirely psychological and an extension of dreaming. It is now understood to be a complex combination of one or more factors, such as psychological and physiological factors as well as chemical interference (such as alcohol and drug abuse). The source of the sleepwalking behavior varies according to age with the younger sufferers having more physiological problems which they grow out of, while older somnambulists, stress and substance abuse play a larger role. Thak you for answering my questions. i dont know wether this is the answer you are looking for.