But never fear, Beliebers: The Best New Artist Grammy nominee is just fine. His breathing trouble was apparently caused by an allergic reaction, for which Bieber received insta-treatment at Providence Saint Joseph Medical Center in Burbank, California, on Wednesday evening.
"He is fine," Bieber's rep told E! on Thursday (January 13). "He had a mild allergic reaction while they were wrapping up last night on the set of 'CSI.' His doctor met him at the hospital to make sure everything was OK. He was released within the hour after his doctor declared him fine. He is back on set working today. All is well."
Judging by Bieber's tweets last night — in which he made no mention of a hospital visit and instead posed a series of random questions to fans — he wasn't too bothered by his earlier troubles.
"If you could meet anyone in the world who would it be?" he tweeted. Followed by: "Ok ok...if you could be the greatest athlete or the greatest entertainer which would u be? tough one." Then: "And the toughest question of the night....fresh sheets or fresh socks??? #epicquestion."
On Thursday, he tweeted this confident missive about being back on "CSI": "Ok last day on the set as a #badass. Gonna get deadly today."
Apparently all is indeed well with the Biebs. Phew.
What are you expecting from Bieber's return to "CSI"? Let us know in the comments!