Hello, the tl;dr version is my arthritic and deaf 13.5 year old cat has started sudden episodes of yowling in distress multiple times a day with no clear reason why, but here are the details:
In June of this year, she had l, what we think, a first episode of this. I had been away for a few days for work, but my parents were coming over multiple times a day to take care of my 2 cats and said she was completly fine and happy before, but was acting withdrawn the day i was arriving back. In the evening a few hours after i got back, she had 2 episodes where she yowled with no clear reason why, then she fell out of her cat tree and hurt her lower back, causing her tail to go limp. We went to the vet, they treated her back with anti-inflammatories for a few days and a shot of solencia (since she has a history of arthritis and we thought that might be the cause of the yowling and fall). Her tail has completely healed since.
Now, this Sunday to Monday morning, she had around 8 episodes, of 2 to 3 sets of yowling, lasting around 5-10 minutes total, around every 3 hours. Again there was no clear reasons what is causing it. She is not doing anything in particular that could trigger pain right before it happens. In between the episodes, she is acting normal and happy, she's eating well, drinking, using her litter box, played a little. She does however seem a little more agitated than normal, i wouldnt say hyperactive, but she is occasionally pacing around more than she usually would (almost like she is looking for something but doesnt know what), she went explore corners of my apt she doesnt usually, and also countersurfed... Those are things she did often in her younger days, but very rarely now that shes an older lady, so thats why my first reflex is not to assume arthritis, i dont feel like she would be doing these things if she was having a sudden onset of severe joint pain...
Right before her episodes happen, you can see her pupils dilating (google AI said this was a sign of pain spike ?), but then returning to normal as she yowls, and then she kinda just spaces out. It repeats 1-2 more times, then she relaxes and go back to her normal happy-self.
So yesterday (Monday), we again went to the vet. I showed the video of what happens to my vet, and she agreed that it was odd. She recommended to try a Solencia treatment to see if that helps. I explained that i felt something else might be going on, but agreed to give it a try. The vet said that otherwise, by physical examination, everything looked good (but didnt requests any tests for now).
The other hypothesis were dementia due to her age, or behavioral/attention-seeking (also since shes deaf), which I dont think fits, because i feel like at this point, shes pretty set in her habits and routine, and i think in both cases, it would be more of a progressive change, rather than sudden frequent like this. And also, this is her distress/pain yowl, its true she is more vocal due to her deafness, but every other times i heard her make that sound, there was a very real underlying cause.
Since the Solencia shot, she had 2 more episodes of yowling in the evening, 4 in the night, and 2 this morning. So no improvement whats so ever.
By the way, the reason why i didn't go for a follow up shot of Solencia since June, is because she had adverse effects when receiving them more regularly in the past. So i decided at that moment, that the cons were outweighing the pros, and that i would reassess if ever her arthritis would become worse.
I know it can take some time for the Solencia to take effect, I'm trying to keep an opened mind and hoping its really just arthritis, but again while its true that she suffers from some arthritic pain, i feel like there might be something more happening. I'm thinking if it's still like this by the end of this week, i will go back at the vet. So i was just wondering if anyone might have any insights on whats happening or experienced anything like this with their cats, in case we need to go back?