Nightly News | April 18, 2013
>>> news about an american favorite. dick van dyke has been forced to cancel an appearance in new york because of an undiagnosed neurological disorder . he's asking for help with a diagnosis. on his twitter account, dick van dyke solicited assistance in figuring out what he's got. a throbbing condition in his head when he tries to lie down. it's lead to lack of sleep and fatigue. it has eluded tests and scans so far. dick van dyke is 87 years old.