Kelly Osbourne has joked that her life feels like a medical drama, after suffering a seizure on the set of her TV show Fashion Police.
The 28-year-old was rushed to hospital in an ambulance after collapsing during filming on March 7 and is now being kept in for observation while doctors investigate what happened.
"My life is now like an episode of House - the impending fight against death and the look of fear in everyone's faces!" she tweeted.
There had been reports that Kelly, who is a host on Fashion Police, had been diagnosed with epilepsy, but her spokesman revealed she has yet to receive a diagnosis for her health scare.
"There is absolutely no confirmed diagnosis regarding Kelly's condition at this time," her representative told E! News.
"She is under a doctor's care and they are continuing to run tests. Kelly is fine and thanks everyone for their continued support."
Kelly reassured fans hours after she was taken to hospital, tweeting: "Thank U all 4 UR beautiful well wishes yes I did have a seizure they are just trying to figure out why."
Her mother Sharon also wrote: "I want to thank everyone for their concern about @MissKellyO. She's doing fine she's at Cedars and is surrounded by the best doctors & love."
After her seizure, Kelly's spokesman said she was "awake, alert and in stable condition."