 [ Symptoms ] my stepfather has parkinson is he has begun to have episodes of dementia type behavior what are your suggestions  he is not sleeping well including leaving the house in the middle of the night [ Disease ] i believe your step father may have a condition termed rem behavior disorder  this is associated with vivid dreaming   and dreaming while somewhat awake this leads to sleep walking sleep talking and often acting out dreams ativan is a short acting drug in the benzodiazepine class a longer acting benzodiazepine is klonapin or clonazepam this is the treatment of choice for this condition