I am going with joker my grandmother was in the hospital and we thought she was totally gone could not recognize anyone.. well my mom was looking through her medicines and after talking with a doctor had a test done and sure enough some liver enzymes went through the roof and that caused her the problems. Everyopne in the hospital just said she is getting old.. If it is not normal behavior that you see question it and the doctors... Its sad but thats why doctors "practice medicine"