My brother gone for brain surgery after facing a accident. Doctor told that he have to remove blood clot. After surgery he came to consciousness in 26 hrs. But after that his behaviour is changed. " He is giving pressure to let him go to outside. Talking strange i.e. i will buy this hospital. This hospital is gud. I want to go washroom and outside. I am not feeling well. " It is so difficult to control him. Nurse always give him injection for sleep. Is this common behaviour ?