It’s just a nasty inflammation on his shoulder, the vet thinks it’s from a tick bite, or a thorn.
Two weeks of meds, three times a day. I’m getting better at it, kitty does not resist as he did at first, it’s become a quick and painless thing to pop the pill right down his throat.
But yeah… I screwed up by forgetting to apply his Advantage flea and tick oil earlier this summer.