She was admitted to hospital where tests show nothing. They rehydrated her and administered morphine for pain. . . horrific hallucinations. She also has dementia and quickly slipping into alzheimers. No appetite, losing weight, constant nausea. Her gallbladder was removed years ago, however she is and has struggled with UTI's for years. She's currently in a nursing home, but I see her slipping away each day. She was very lucid yesterday, but still battling nausea and diarrhea. MRI showed nothing, which was both good and bad. No cancer, but no definitive answers. What would cause these symptoms? She has also been on an antidepressant for years, and has lately been very depressed. At 84 and failing health, having no independence isn't helping her dementia. Your help is much appreciated.