Photo: Artie Lange.
"We can confirm that Artie is in the hospital," Lange's camp said in a statement obtained by E!Online. "Artie has chosen to keep all information on this matter between him and his doctor. There will be no further comment."
According to the site, Lange has been absent from "The Howard Stern Show" since early December and cancelled a New Year's Eve gig along with several other stand ups.
His website confirms all dates through February 12, 2010 have been called off.
The 42-year-old funny man has a well-publicized history of substance-abuse issues. In 2009, Lange made headlines for a DUI bust, a homophobic appearance in HBO's Joe Buck Live and the release of his comedy album, "Jack and Coke."