What Causes Shouting And Violent Behavior During Sleep When Treating Parkinson S Disease?

hai sir my father is suffering with parkinson disease from last 5 years and he is using the medication entacom plus 100 bexol parkitidin admenta and from last 2 weeks my father is facing problems in the sleep like shouting in the middle of the sleep and beating the persons beside to him in the sleep whether there is any cause for these