Dear Carol: My dad has had heart disease for years. He recently had a stroke that left him weak on one side but otherwise he seems to have recovered physically. Mentally, he’s not doing so well. He seemed to go downhill fast while he was in the hospital. The neurologist thinks that Dad may have vascular dementia, but she also told me that he shows some signs of Alzheimer’s. We’re watching him closely now that he’s home, but my main concern is that he has times when he talks to people who aren’t there. What’s going on? - R.J.
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