Dick Van Dyke suffering from ‘undiagnosed neurological disorder’

Dick Van Dyke is suffering from an as-yet “undiagnosed neurological disorder” and has been advised to rest and avoid plane travel until doctors know what the veteran showman is dealing with, according to his rep.

“My head bangs every time I lay down,” the 87-year-old said Wednesday on Twitter. “I’ve had every test come back that I’m perfectly healthy. Anybody got any ideas?”

The tweet sparked dozens of responses, some serious and others joking. Comic Elayne Boosler advised him against sleeping on the drum kit.

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One immediate effect of doctors’ advice was the nixing of a trip to New York next week to receive the first Lifetime Achievement Award for Bettering Humanity Through Comedy from the 92nd Street Y.

The cancellation was because of “fatigue and lack of sleep resulting from symptoms of a yet-to-be diagnosed neurological disorder,” his rep told “Entertainment Tonight,” which first reported the news.

“Dick is otherwise in good physical condition but the fatigue factor has become acute,” his rep told USA Today in a statement that included the caution against air travel. Tests have not yielded a specific diagnosis.

Van Dyke tweeted that he’d had MRIs, CT scans and a spinal tap in search of a cause for his symptoms, which he said had been going on for seven years.

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