Back to the Future.

I first noticed changes in him several years ago.  It was nothing earthshaking, nothing that couldn't easily be remedied by my always best friend, denial.  He would walk aimlessly away from us, even from his daughter's presence--usually unlike him.  He got lost more easily in strange cities and seemed to have trouble following directions and/or using maps.  We both got concerned enough gradually to check it out with appropriate medical personnel.  Two more years of hard earned anguish accompanied lots and lots of medical investigation.  He had every centimeter of his body examined, probed, scanned, xrayed, tested, head to toe.  I was desperate to find someone, anyone, who could make some kind of sense of all of it.  (We have since found exactly the help we need, but that is a story yet to tell.)