Casey Abrams has begun recovering from the illness that kept him from attending American Idol's live results show Thursday night. 

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"Hey guys, thanks for the well wishes. I got some nice fresh blood in me and feeling better. People at Idol [and Cedars-Sinai Medical Center] are [treating] me real good," Abrams tweeted on his Idol Twitter account after the results show.

Last night's American Idol results show had announced Abrams, a 20-year-old who currently resides in Idyllwild, CA, was not able to participate in the show because he had been hospitalized for an undisclosed illness.

"You'll notice that Casey is missing from the group. He is unfortunately sick and in the hospital right now," American Idol host Ryan Seacrest said during the show.

"Wave to him! We know you're watching buddy, feel better -- shout out to the nurses -- Get back here soon, okay?"

While no additional details of his illness were released, TMZ subsequently reported Abrams had been rushed to the hospital with a reoccurance of the same "severe stomach pains" which had hospitalized him prior to the season's semifinals performance show and put his spot in the competition in jeopardy.

Abrams had later downplayed his illness when Seacrest raised the issue during the semifinals performance show.

"My stomach kind of just wasn't in the right place," Abrams told Seacrest after his performance. 

However, according to People, Abrams actually has ulcerative colitis -- an inflammatory bowel disease which causes cramping and abdominal pain and resulted in the Idol finalist receiving two blood transfusions on Thursday night.
About The Author: Elizabeth Kwiatkowski
Elizabeth Kwiatkowski is Associate Editor of Reality TV World and has been covering the reality TV genre for more than a decade.