My mother who is 87 and has diabetes had her leg removed in April due to gangrene. She has been in rehab and doing very well and was given a prosthetic leg and is walking with a walker, the problem is that out of the blue she will become confused, hallucinate,and dillousinal. It seems to last for different amounts of times. She was fine on Sunday and today when I spent two hours with her then later this afternoon, she was inconsolable ,confused etc. she is checked for uti every time she gets like this and only had one the first time. She has had cat scan by neurologist which did not show any stroke. She was never DX with dementia or Alzheimer s . Please help we are at our wits end!