It's been about a year and half since my father was diagnosed with Alzheimer's, and he's been in serious decline ever since. Recently when I would call him, he didn't know who I was, or who he was, or where he was, or why.
Yesterday he lost the ability to speak. My youngest brother, thinking maybe it was a stroke, took him to the hospital. They did several tests there, and determined it wasn't a stroke. Now he can talk again, but he just repeats the same words or phrases over and over, though he is clearly trying to say other things.
This is all extremely depressing.