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Michael Bolton's Daughters Share the 'Weird' Symptom That Led to His Brain Cancer Diagnosis (Exclusive)

Michael Bolton's daughters share the "weird" symptom that ultimately led them to take their father to the hospital, where he was diagnosed with glioblastoma, an aggressive and rare form of brain cancer, in 2023.

The incident was “super weird,” his daughter Taryn recalls in this week’s PEOPLE cover story — and it turned out to be a major indicator that Bolton was dealing with a serious health issue that would later be diagnosed as glioblastoma, a rare and aggressive form of brain cancer. But a performance in mid-November at a charity event on Richard Branson ’s Necker Island was marred by an unusual bout of nausea and balance issues, which Taryn and her sisters Holly, 47, and Isa, 49, chalked up to stress and exhaustion. Bolton’s neuro-oncologist, Dr. Ingo Mellinghoff of Memorial Sloan Kettering Cancer Center in New York City, says symptoms of brain tumors often include sudden changes in personality, severe headaches, seizures, coordination issues and muscle weakness and paralysis.

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