Just a week before he's due in court to be sentenced for drug possession, Artie Lange canceled a comedy show because of health concerns.

Lange, 50, previously had a court date postponed because he had to be hospitalized for complications of diabetes. On May 18, Lange, who pleaded guilty to heroin possession, is expected to be sentenced in state Superior Court in Newark.

The comedian was supposed to perform at Scotty's Pub and Comedy Cove in Springfield on May 10, but in the hours before he was set to take the stage, organizers called those planning to attend to say that he wasn't going to be there.

Laurielle Nagel, manager at the Comedy Cove, said Lange was in the hospital.

"His problem is his blood pressure and his sugar," she told NJ Advance Media.

Lange, who grew up in Union Township and lives in Hoboken, has been testing out new material at the Union County spot.

On May 5, he received a standing ovation for his set, Nagel said.

"His show is phenomenal," she said.

Lange is supposed to return to the venue on May 31, then perform every second and fourth Thursday.

"He's got to get his health in order," Nagel said.

Health issues have been a concern for Lange even before he emerged from drug rehab at the beginning of the year following several arrests in 2017. In October, he had to cancel a show in Akron, Ohio because of spiking blood sugar levels he attributed to going a little overboard on his birthday with cake and wine.

"I have diabetes," Lange said at the time on "The Artie and Anthony Show," his Compound Media show with Anthony Cumia. "And my blood sugar was, let's say, it was Babe Ruth's lifetime slugging percentage." He promised to make it right with fans in Ohio.

I went in the hospital to get my blood sugar under control. I'm out to go to work. I missed too many days & I insisted. My blood pressure is way up. So I have to go back in tonight til it's down. I'm payin for an unhealthy life. When the medication is right I will be fine -- Artie Lange (@artiequitter) February 22, 2018

Lange also addressed his health battles after his court appearance was postponed in February.

"I went in the hospital to get my blood sugar under control," he tweeted. "I'm out to go to work. I missed too many days & I insisted. My blood pressure is way up. So I have to go back in tonight til it's down. I'm payin for an unhealthy life. When the medication is right I will be fine."

"So don't worry," Lange continued at the time. "But when a doctor says I'm in danger of a stroke unless I change everything I do I get insanely scared. I hate the hospital but they said if I don't go back they'd refuse to treat me. I will do this guys. I ain't ready to check out yet."

In December, Lange pleaded guilty to possession of 81 decks of heroin (bags usually worth about $10 each) after he was arrested for missing a court date in connection with his arrest in May 2017 (it was the second court date he'd missed that year).

State Police said they stopped Lange during a plainclothes surveillance operation after he was allegedly seen driving erratically away from a McDonald's in Bloomfield on the Garden State Parkway. Police allegedly found Lange with a bag of heroin in his lap and a straw.

It was Lange's second drug arrest that year. In March of 2017, he was arrested outside his Hoboken condo after he was allegedly found with heroin, cocaine and drug paraphernalia in the building's parking garage.

Lange's real-life struggles with drug addiction were the focus of an episode of the latest season of the HBO series "Crashing," in which the Jersey comedian plays himself as a kind of grumpy mentor to an amateur comedian played by Pete Holmes (see clip below).

You sent Yoga videos to a guy who's currently calling this breakfast pic.twitter.com/dd3pkG5pBL -- Artie Lange (@artiequitter) May 6, 2018

Though Lange tweeted that he had been cut from the show after he was arrested, he ended up staying on the show, and both Holmes and executive producer Judd Apatow stood by Lange in the wake of his arrests.

Lange, who is expected to appear in the show's third season, has said that the episode, titled "Artie," was being considered for submission to the Emmys.

On March 23, Lange tweeted about his pre-sentence interview.

"I saw the judge who is very fair," he said. "She said I looked better! The interview went well. So I'm praying for probation but I will respectfully do what they tell me to do!"

Lange's lawyer, Frank Arleo, said he hadn't heard any health news from the comedian this week.

On May 6, Lange tweeted a photo of a plate of pizza and what appeared to be a cup of Coca-Cola with this message:

"You sent Yoga videos to a guy who's currently calling this breakfast."

Apart from the Scotty's Pub shows, Lange's next billed gigs are scheduled for June 14, 15 and 16 at the Stress Factory in Bridgeport, Connecticut.

Amy Kuperinsky may be reached at akuperinsky@njadvancemedia.com. Follow her on Twitter @AmyKup or on Facebook.