My wife, 83, has moderate dementia of the Alzheimer's type, mainly memory loss and delusions, a steady decline but but happily no serious physical consequences yet. She was treated with aricept for 51 day very successfully - a daughter said it was like having the old Mummy back again - but abruptly refused to take any more, insulted and drove away the Community Nurse who used to visit her, and swears she will never again see her psychiatrist or take aricept, prozac or anything like it. Why? She says aricept gave her a terrifying hallucination of someone horrible in the kitchen. It didn't. of course - I think it originated in her ordinary confusion. My and our offsprings' atempts to get her to change her mind only generate fury. Any advice?