Somnambulism

Sleepwalking refers to the strange phenomenon in which a person unconsciously gets out of bed and moves about during sleep, then returns to bed to continue sleeping, and upon waking has no recollection of the activities that occurred during sleep. In neurology, it is a type of sleep disorder. The symptoms generally involve walking around within the residence in a semi-awake state, but some patients may leave the residence or engage in dangerous behaviors, such as climbing out of windows, driving, or even violent acts such as homicide or rape.