Not tylenol, it was aspirin.

A massive overdoes of tylenol would be toxic to his liver and do us all a favor. But we're not so lucky, sadly.

Not in the medical field, but I think you got it right. I saw similar with my grandma, the nurses started injections with less visible areas - arms, legs, later moved to feet and finally hands as her veins collapsed. She didn't make it to the neck, but I have to think it's a sign they are running out of places to poke

I've never heard of a neck IV. never seen one. I don't work in medicine but I am more of a professional patient. Have lived at least a year and a half of my life inside a hospital (yes I have done the maths properly) to the point where said hospital had a "this is [whatever my username at the moment is]'s room" for like ten years on the door, and if I got admitted, it was my room as soon as it was vacant.

(it was a nice single room in the corner with a good view of the big tree across the parking lot and had an adjoining single room connected by accordion wall. If it was a slow week in the hospital they'd let me open up the accordion, push the other gurney to the wall and have a human sized room instead of a prisoner sized room. They were wonderfully accommodating)

Anyways my point is, if they are at the point of having to start a line in the neck, they'd probably do what's called a Peripherally Inserted Central Catheter (PICC) line (run a larger catheter from an arm or leg to the heart, used for longer term stays or more caustic liquid medications) or a heart port (used for more caustic medications than PICC lines) instead. The jugular vein I would think has too much pressure for a vein to accept an IV catheter without springing one hell of a leak, but i am only an advanced layperson. They did accidentally start going up my carotid instead of down to my aorta when placing my PICC all those years ago, but it didn't leave a bruise and I doubt it would. Also we'd see iv ports on his arm (mine hung down to my wrist). But you never know.

Both conditions are unpleasant, but I had a stronger gut instinct towards staph. It’s possible he has shingles because I suspect he never received the vaccine, and his condition is likely not being adequately cared for.

He’s probably receiving the same level of treatment as someone on their deathbed, dragged out for press coverage. Your family has to genuinely care about you, or shenanigans ensue.

Shingles there is unusual, typically shingles break out around the mid body.

no onewants to see that.

Man if some kind of outbreak happens because they can't let him die it would fit his legacy

All the vaccine does is: make it happen less often and less severe. Vaccines are not panaceas.