Loose Lips
(Note: I've posted this on Instagram as well, to cover all the bases.)
I snapped this pic of Derry Sunday afternoon. I noticed that he had a swollen inner lower lip that was protruding much of the time. There does not appear to be a sore or abrasion of any kind, not that I can see.
I'm wondering if anyone has encountered this before and can provide suggestions as to the cause.
I did send this pic off to the vet yesterday, asking if he knew what was wrong and if Derry should come in or if he needed meds of some sort. The vet replied stating that it looked like normal tissue to him and that if it was swollen he couldn't think what would have caused it. He's happy to see Derry, of course, and if I have to take my little one in I will--but I'd rather not have to take him there for a fourth appointment in such a short time.
I have never used plastic food or water dishes, I have not changed food or treat brands. I thought at first that he must have been stung or bitten by a bug in the garden, but I'm not sure the swelling would remain two days after the fact. The only things that were "different" on Sunday were that I gave Derry a few tiny bites of my salmon (and did yesterday too, with the leftovers) and I cut some foliage back in the garden space.
Does anyone have any thoughts or suggestions? It doesn't seem to be bothering him (he's not pawing at his mouth) and it's not impeding his eating. At the moment I'm keeping my eye on it and hoping against hope that the swelling will reduce without intervention.

Comments
attempted to eat the spider, or if he was sleeping and the D thing just bit him. it lasted
about a week but like derry, it didn't cause him to stop eating or drinking. knock wood
he doesn't need a vet visit ♥♥♥
But what the Tabbies write makes sense, too. A simple bite - a reminder of a battle with someone smaller but just as tough - could be the cause. None of mine have had similar wounds, but I know of cats who have.
https://vcahospitals.com/know-your-pet/feline-eosinophilic-granuloma-complex-in-cats
At this time (and I stress that), the tissue looks perfectly normal, just swollen. But if it's still the same by tomorrow afternoon or perhaps Thursday morning, I'll make an appointment to have him checked out. *Sigh*
On March 7, 2008 our late Sacha girl was diagnosed with having Feline Eosinophilic Granuloma Complex, an immune disorder. She had a swollen lip and the vet suggested to feed her only from an earthenware bowl. Never seen any other kitty having that problem. It went away rather quickly though.
Let's hope that Derry does not need any more trips to the vet. He might be stressed too.
Big hugs!
Mariette and kitties
Be well, both of you.
Be well, both of you.