Osbourne, 62, "collapsed from mental and physical fatigue" Friday night when she returned to her Los Angeles home after traveling in New York and Toronto. According to her doctors, she suffers from "extreme exhaustion."
Osbourne took a one-month break from The Talk in March when she was hospitalized for pneumonia after undergoing hernia surgery. Osbourne's doctors are now saying they believed the co-host returned to work too soon following the trying ordeal.
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