A colleague of mine has, from time to time, stopped in my office to chat about her father. I'm the "office expert," when it comes to caregiving woes. As I've listened to her talk about her experiences with her father, a couple of times I've said, "Are you sure he has Alzheimer's disease?"
She'd say, "That's what the doctor says."
Later, after a visit with a different doctor and more tests, she called to tell me her dad didn't have Alzheimer's. He had vascular dementia.
I've written before...


10 Signs of Alzheimer's
10 Ways to Protect Your Brain Against Alzheimer’s
10 Things to Do After an Alzheimer's Diagnosis
Seven Facts You Should Know About Alzheimer's Disease