Both of my parents' death certificates cited the cause of death as organic brain disease, which basically means dementia. They each had dementia, though each of them suffered from a significantly different type.
Dad's was dramatic. It was the result of surgery that was supposed to prevent the mental decline he would eventually suffer as a result of a World War II brain injury. Something went wrong in the surgery, and he came out of that surgery totally demented.
Mom's dementia was a...

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