Dick Van Dyke (Jason Kempin/Getty Images)
Dick Van Dyke has been sidelined by a health problem.
The legendary actor/song-and-dance man, 87, has canceled a public appearance set for New York next week due to fatigue and other symptoms, according to an Entertainment Tonight report.
Van Dyke had planned to attend an April 26 event at New York's 92nd Street Y, but can't because of "symptoms of a yet-to-be diagnosed neurological disorder," his rep told ET.
USA TODAY reached Van Dyke's rep, Bob Palmer, who says, "Tests and scans have yet to reveal a specific diagnosis. Various medications have not diminished the symptoms."
He adds that thanks to the star's "strong constitution and years on a daily fitness regimen Dick is otherwise in good physical condition but the fatigue factor has become acute. Until there is a specific diagnosis and treatment plan he is advised against travel by flight and is resting at home in Malibu."
On Twitter, the actor sounds baffled: "My head bangs every time I lay down. I've had every test come back that I'm perfectly healthy. Anybody got any ideas?"
His followers have offered suggestions for possible causes including ear problems, sinus issues, allergies, acid reflux and more.