Son has both. Early onset was diagnosed aged 40. We can tell which symptoms are Alzheimer’s and which are dementia because they are different. He’s 45 now and has 24/7 caregivers in our home. His brother and I are 2 of 4 needed. He has other disabilities so he’s got to have awake staff day and night. We worry more about his seizure disorder and migraines than AD or dementia. Still enjoys TV and PlayStation, outings, family time. He is a talker and most of the time can follow along in conversation just fine. He has become incontinent most of the time so he wears adult diapers. He does use the toilet with assistance daytime. He feeds himself. He does have to have a caregiver give all his meds to him and help him dress. Anything you’d like to ask, go ahead.