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Artie Lange

Jeffrey Ufberg/Getty Images

Not much is sacred to Artie Lange, but the health of Howard Stern's right-hand man is apparently no laughing matter.

Lange's publicist has confirmed to E! News that the longtime shock-jock sidekick has admitted himself to an intensive outpatient rehab facility.

There's no word on where the New York-based comedian is being treated, or what he's being treated for.

News of his in-treatment status comes after Lange canceled a string of standup dates, as well as a planned appearance on the Comedy Central roast of Bob Saget, which taped in Los Angeles on Sunday night.

Last April, Lange made headlines when a verbal onair argument with his personal assistant turned physical, resulting in him tendering his resignation to the Sirius Satellite Radio show.

While Stern accepted the resignation, an apologetic Lange was allowed to return the show later that month with the caveat that another similar incident would result in his termination.

Lange is still expected to return to the Stern show when it comes back from hiatus later this month.