Kyle Busch died after severe pneumonia progressed into sepsis, his family says

[C Moon]

13. Our neighbor slipped down some stairs outside, and had a bad bruise and pain in her ankle.

She never got it looked at.
A month or so later, it was still black and blue and she became ill. She said it got so bad that even her hair hurt.
She ended up in the hospital for a few days. It turned out she acquired sepsis due an internal ankle injury.