Sinead O'Conner said she rushed to the hospital earlier this week following complications from surgery. The singer posted on Facebook saying she was unable to breathe and that her liver had been accidentally damaged during a medical procedure.
The "Nothing Compares To You" singer also bemoaned she was alone and had no emotional support in her posts.
"Gotta go to emergency. Liver all f----- and killing me," O'Conner wrote. "Can't breathe properly it so sore. Am posting as am lonely. Story of life. Wish was not so alone in world. Gotta be worth something to someone after all these years and after all I given. Am so shocked to be so all alone."
In an earlier note posted that same day O'Conner said she has been in rehab following 30 years of substance abuse and would be living in a "sober living environment" for the next year.
In May, O'Connor caused a brief scare when she was reported as missing in the Chicago suburbs, but was found safe at the Best Western hotel in Morton Grove, where several police cars and an ambulance had been spotted.