Ron Reagan son of President Ronald Regan Claims his Dad had Alzheimer’s while President

Ron Reagan, son of President Ronald Reagan, claims in his new book that his father suffered from Alzheimer's disease while he was in the Oval Office, reports Paul Bedard of U.S. News & World Reports' Washington Whispers blog.
"Three years into his first term as president, though, I was feeling the first shivers of concern that something beyond mellowing was affecting my father," Ron Reagan writes in "My Father at 100: A Memoir," due out in bookstores Tuesday. The centennial of the president's birth is Feb. 6.

Doctors have said President Reagan had no diagnosable Alzheimer's while he was in the White House. He was elected president in 1980, left in January 1989 and publicly disclosed he had Alzheimer's in 1994.
Ron Reagan writes that his father had brain surgery in 1989 after a fall from a horse. Here's what he says doctors found:
"Surgeons opening his skull to relieve pressure on the brain emerged from the operating room with the news that they had detected what they took to be probable signs of Alzheimer's disease," Reagan writes.
That claim has also been disputed.The horse accident has been previously reported, but associates say no such surgery took place, Bedard writes. Moreover, Ronald Reagan made public appearances just days after the accident, and no one reported that his hair was shaved or his skull bore stitches.