You may well be right that it is Parkinson’s. My Dad; however, died of pulmonary fibrosis and Hillary’s episode today reminded me of him. Over the course of three years his cough got worse and worse when he attempted to talk. He took steroids to fight the inflammation in his lungs, but that complicated his type two diabetes, and when that flared up he was in the same kind of weak state Hillary was in today. He made it through five rounds of pneumonia in the last year of his life, but the sixth time took him and by then he was happy to go. I think Hillary may well have pneumonia, but it may not be the first time and eventually none of the antibiotics will work.
Most Parkinson’s patients die from something else that could be chalked up to “complications of Parkinson’s.” My father died from gangrene, because blood could not get to a sore because clenched up tendons kept the blood from flowing through the veins in his extremities. This is a terrible disease and everyone’s experience of it is different. There is no “typical” progression of the disease. Dad never had tremors, for example.