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What Does New Research Tell Us About Muhammad Ali’s Parkinson's Disease?

November 17, 2022
David Parker, Esq.
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David Parker, White Plains and New City NY Estate Planning Attorney
David Parker, Esq.
David Parker is an attorney who specializes in Estate Planning and Elder Law and has been practicing law for 30 years. Be it Wills, Trusts, Powers of Attorney, Health Care Proxies, or Medicaid Planning, David provides comprehensive and caring counsel for seniors and their families. A large portion of David’s practice is asset protection strategies so that families do not lose their hard earned savings to nursing home care costs. He also handles probate administration for the settlement of estates.
Muhammad Ali had idiopathic Parkinson's disease that emerged at an early age, according to new evidence from physicians who repeatedly evaluated the fighter over 20 years.

"Based on extensive long-term clinical and cinematic follow-up, it is clear that Muhammad Ali had young-onset tremor-dominant idiopathic Parkinson's disease," reported Michael Okun, MD, of the University of Florida in Gainesville and co-authors of new research.

MedPage Today’s recent article entitled “New Evidence Sheds Light on Muhammad Ali's Parkinson's Disease” reports that the pattern of Ali's symptoms showed his disease was prolonged, progressiv and responsive to dopamine, the group wrote in a viewpoint published in JAMA Neurology.

"This viewpoint represents the first time that a group of physicians who continuously evaluated him over the years has, with permission from the family, spoken on the record," Okun told MedPage Today. "Ali is a vitally important part of our history and it is important we accurately document his Parkinson's disease symptoms and his disease course."

"There remains a substantial amount of uncertainty in the degree to which Parkinson's disease versus repeated hits to the head contributed to Muhammad Ali's progressive tremor and cognitive impairment," he said.

"Thirty-plus years of a progressive, asymmetric, dopamine-responsive resting tremor, accompanied by other classical features, provides strong evidence for a diagnosis of idiopathic Parkinson's disease in Ali," Okun noted. "Post-traumatic syndromes with tremor have a different presentation."

Ali's symptoms were clear in a video that showed him lighting the 1996 Olympic torch, Okun and co-authors say. He manifested a classic Parkinson's disease left-arm rest tremor, which was suppressed as he raised his left hand to steady his right arm in order to light the torch.

From 1995 until his death in 2016, the boxer received his neurological care largely at Emory University in Atlanta. Okun and co-authors presented information from 20 years of clinical reports when Ali had in-person visits, testing, and hospitalizations at Emory.

"Muhammad Ali's disease course, from his late 30s until his death at age 74 years, was chronic and progressive," they wrote. "He manifested fatigue, hypophonia, bradykinesia and a masked face, as well as many of the visible motor symptoms of Parkinson's disease. He was clearly responsive to levodopa, as documented in his several examinations in the early 1980s, a feature usually not present following traumatic brain injury."

Ali's fluorodeoxyglucose (FDG) PET scan at Emory in 1997 showed progressive bilateral striatal hyperactivity, the researchers said. A fluorodopa F 18 PET scan in 1998 showed classic low striatal uptake. "Like the FDG PET, this study was consistent with Parkinson's disease and not traumatic brain injury," the authors wrote.

Dopamine transporter scanning to differentiate Parkinsonism from essential tremor was not available at the time. MRI revealed brainstem atrophy, third ventricular enlargement and a cavum septum pellucidum.

"Over the course of many years, Ali's face became gradually more masked, his speech more hypophonic, and he developed the classic late-stage symptoms of idiopathic Parkinson's disease, including a stooped posture, shuffling steps, postural instability and falling," Okun and colleagues observed.

Polysomnography confirmed Ali had rapid-eye movement sleep behavioral disorder. His weight slowly declined. Serial neuropsychological testing showed progressive frontal and memory impairments.

"He had mild occasional depression," the physicians wrote. "Ali remained generally positive and embraced his diagnosis, despite the realization it was chronic and progressive."

Ali died of sepsis on June 3, 2016. While his medical team discussed autopsy with him, he declined for religious reasons.

"Given the lack of a final tissue diagnosis, we rely on the detailed clinical follow-up and serial PET imaging studies to understand Ali's medical condition. A 34-year chronic progressive presentation with asymmetric levodopa-responsive resting tremor, accompanied by other classical features, provides strong evidence for a diagnosis of idiopathic Parkinson disease," Okun and colleagues stated.

"In contrast, post-traumatic tremor is commonly transitory, and manifests as a postural and/or kinetic tremor," they continued. "In addition, post-traumatic tremor is not accompanied by progressive cogwheel rigidity and bradykinesia, both observed in Ali."

Head trauma is a known risk factor for later onset of Parkinson's disease, the authors explained. "However, a causative association in the Ali case cannot be determined.”

Reference: MedPage Today (Oct. 24, 2022) “New Evidence Sheds Light on Muhammad Ali's Parkinson's Disease”

 

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