What immediate cause of death is listed on Muhammad Ali's death certificate?

The immediate cause of death listed for Muhammad Ali was septic shock. Ali was hospitalized in Scottsdale, Arizona, on June 2, 2016, after developing a respiratory illness, and he died the next day at age 74.

Septic shock is a life-threatening form of sepsis in which an infection triggers dangerously low blood pressure and widespread organ dysfunction. It is different from pneumonia, although pneumonia or another respiratory infection can lead to sepsis and septic shock.

Ali had lived with Parkinson's syndrome for decades, but Parkinson's was not identified as the immediate cause of death. Reports also sometimes mention pneumonia because he had previously been hospitalized with it in 2014. The key distinction is between an underlying illness, the final complication, and the immediate cause recorded at death.