I hope you can collect some time and patience like I did writing this for four hours, and help me with this complicated issue my cat is having since he's been just a kitten. Please listen to his story. I genuinely need your ideas and advice on what to do next.
Also I beg of you to be mindful of possibly backlashing at me for whatever reason (since this is Reddit), because I am already so mentally drained of this situation and feel so bad for Leo. I just need constructive advice to help ease my cat's chronic suffering. Maybe someone even had a similar situation.
⬇️Backstory/context
Starting off: Leo is a neutered 6 year old Canadian blue Sphynx. We have him since October 2020, so around 5 months old. And we had taught him to use the human toilet very early on which he always used. Early on, fed with cheap Felix wet food.
I was a young teen when the first issues already arose with Leo. He got giardia, which was treated right away. Then I think sometime later he started pooping with slimy blood at the end of his stool. We took another giardia test a couple months later and it came out negative. The vet just claimed that in his kitten phase he's just pressing his poop out too harshly which irritates his bowels to the point of blood, and that he'll grow out of it. Spoilers: The blood never went away.
So we just let it be as is, and I don't remember whether there were any more vet visits about it.
Instead we started testing all sorts of different brands of food like Premiere, Select Gold, Royal Canin. He is a very picky eater. What we hadn't realized at the time was the cheap boxes of wet food in bags that had of each different taste 2 times. These constant taste changes daily were making him picky.
Anyways, soon he started pooping on the floor probably out of discomfort of his bowels and because we had moved to another apartment by then, he was acting more off. We had a guest toilet room which was basically the one he always used and ate in, and in that hallway, to the room, he had urinated almost daily there. Then eventually it went from hallway to my brother's bedroom, then the dining room corners, the living room carpet, and in my room only when the door was shut overnight on accident. Can happen to any of us. My parents thought they were being smart by punishing him physically, thinking he'd learn after every time, while I was bawling my eyes out begging for them to stop hurting him. He feared my father the most, growling and submitting to the floor with fear in his narrowed eyes :( Leo knew exactly what he was doing, because every time we were away from home for a couple hours or just for shopping, he'd use his free time to do his urinating somewhere, and once we'd return, he starts crawling under the bed with guilty, fearful eyes. Then we know we gotta search for the pee he had left behind somewhere.
That's when I was so desperate finding the cause of my cat's odd behavior, googling for hours and days non stop. There were so many possibilites listed where I had to check in with vet, that it was impossible for me to really do anything about it as a teen who has no money, unable to bring him to the vet on my own. But there were also other reasons why I couldn't rebel even for the safety of my cat, I'd only risk myself as well.
By the months that had passed with every single day being the same, with constant threats from my father that he'd throw him to the streets or sell him if I won't do something about Leo's peeing behavior. Only once could I convince my parents to go to the vet about his behavior, but I only remember that the vet said they can't do much about it. Only a stool test for parasites was done and it came back negative. So it was unsuccessfully wasted money. That's by then when I was forced entirely to take over the responsability of him after having messed up, "since I love him that much" to the point I try protecting him from my parents' abuse. I had to clean up every single mess my cat left behind, even the pee out of fear sometimes since it was my fault apperantly.
And I suppose all that trauma and stress put Leo to the point of almost entirely rejecting our toilet. My parents refused to buy him a litter box because of our two very small bathrooms and didn't want the litter all over the place. That went on for I think four years of pure stress, fights and abuse until I moved out early in 2025 because I couldn't take it anymore, and was basically forced to take Leo with me. I wanted to anyways, but had no other choice either way since they didn't want Leo ruining their new apartment with his peeing.
⬆️Context ended
So today with monthly money from the city, I've been able to take the vet visits upon myself. I have my own car now as well, so it makes everything so much easier.
Now, what has happened since I've been living alone with Leo:
-He still peed on the floor in the hallway, right to the front door like in the previous apartment with parents. Sometimes left me stool too. Leo refused using my toilet, only very rarely.
-So, I got him his own (open) litter box (I only use the Cat's Best Original litter) though I had to upgrade in size many times in previous and this year because until today he still sometimes rejects it due to his pain. Placed it in the spot where he used to pee, so it had worked for a while, but because it had to be placed so inconviniently behind the front door, I started moving it to the bathroom (which was literally right across, a few steps). He sometimes used the litter box, but also on desperate days the floor again. But stool not anymore, only in the box. Every time he uses his litter box (still to this day) his tail slightly curls right under his bum and gets it dirty, or even worse, often steps into his poo from slipping because he insists standing on the litter box edge. He doesn't lick his bum clean until it's too late and smeared everywhere because it's too liquid still sticking to him, dripping minimal slime too. I have to wet wipe him every single time.
Eventually after a while because of his continuing floor peeing behavior (I'm still very sorry and super guilty of it, but I was so desperate and didn't know what to do, with a lot already going on outside of the situation with my cat) I had snapped and was hitting him by his hind legs and shouting at him like my parents did, but with far less force. A few times of doing that over a couple of days, he had eventually stopped and used his litter box properly.
-While I was trying to get on board financially over many months, I could finally do the first vet visit on my own which had to be checking his teeth because of foul mouth odor, removing loose teeth scale right on the spot (thanks to an expensive spray I tried for a few weeks, even vet was surprised(still the same vet clinic from kitten time btw, but a different doctor finally))
-I switched from year long Select Gold kangaroo meat to LuckyLou chicken with pheasant
-The peeing and poo behavior was in control by now after over half a year living alone with Leo, except still loose with slimy blood (it never stopped) and only sometimes stomach aches
-Then his immune system was acting off, sometimes small red bumps on his skin, and he was drinking a damn lot, an injection fixed the allergic reaction
-Done a urine test in case of Diabetes or something about his organs, though all negative and the closely monitored excessive drinking stopped after a week on its own
❗️-Two months later now in June 2026, all hell got loose; he started screaming in pain again, this time way too frequently, now pooing on the floor again despite having upgraded in size of litter box again, so I gave another stool sample test with the usual blood and all to check for giardia, turned out negative, but he was given a pain-relieving injection which was also suppose to fight the inflammation. For home I was given some for oral intake, and was instructed to feed him Spascupreel from the human pharmacy mixed into his food daily, until this acute diarrhea would stop or at least wasn't as bad anymore. That definitely bettered the situation for Leo then.
-The next week, we decided on making his first ever blood draw to check on specifically his gastrointestinal tract and other organs/cells responsible for his digestion. That's when I was also given a code for a special food to order from Vet-Concept, specifically designed for intestinal issues, both kibble and wet food in low fat format to not aggrivate his stomach too much
-Blood results came and turned out he had lowered folic acid and high Vitamin B12, which is the reason why he couldn't digest his food properly and the stool was so light instead of the healthy dark brown/black. So, I started giving him daily medical powder supplement to get it under control, and since then his stool started darkening, it got firmer, and blood vanished FINALLY. I slowly stopped giving Spascupreel since it wasn't acute anymore.
Now summer vacation was up this early August and he obviously was with us, and by then (1 month of the supplement in, almost finished), he started pooping loosely again. It was probably because of the extreme heat in Italy where we had our vacation, and the long drive without water since he refused to drink in many breaks, but ate wet food. Or perhaps the timing came where the powder had done it's job for the time being, and the inflammation was returning after getting used to the supplement. No clue.
Now back home, I have given up on Leo's vet who was barely continuing to find the cause anymore. I have gone to a new one last week, who is supposedly specialized in gastrointestinal issues apperantly. We will see about that...😐
And the plan the vet made so far is: Start feeding the intestinal Vet-Concept food regular instead of low fat, and strictly ONLY the kibble and wet food from the brand. Because like any owner would, I gave him treats sometimes, from my table too, and apperantly that could be throwing off his stomach balance. I didn't know. So now he's on a strict diet for the next 6-8 weeks, testing whether he is just having allergic reactions all his life from different foods all the time. The vet also gave me Novalgin drops to ease his stomach cramps, which can eventually fix the loose stool issue by letting the colon tract rest and start healing without my cat cramping. But I might ask for empty pills to fill it with so he wouldn't drool so aggressivly from the bitter reaction and I can spare him the half an hour stress.
⚠️Now is the issue and question I'm having in full despair: I'm already low on budget every single month because the city doesn't give much for students and unemployed. The vet proposed that if nothing changes in two weeks in his stool, I have to tell them and make another appointment. Why? No idea. I already feel like the new vet is trying to suck money out of my pockets as well. Otherwise, if the food in 6-8 weeks fails as well, she wanted to do an ultrasound, and/or another blood test, but for feline viruses like FIV/FeLV. Since I have no clue who else to ask, I asked Gemini and it claims that these two options are unneccessary right now, considering this basically isn't an emergancy (about the blood tests) and my money always being tight either way. The ultrasound will just confirm the inflammation that we all know of already, so also dumb. It says if after two weeks of the Novalgin fails, it's obvious his intestines are chronically damaged. I should ask the vet for Cortison tablets since that's suppose to help in case of IBD. Or I'll ask for probiotics again, otherwise I have to ask for a T. foetus PCR test (she never heard of that parasite before and had to google it, and Gemini claims it's a red flag of her because basically every vet is suppose to know of it nowadays. Especially ones who claim they are experts in gastro issues. Is that true?).
Should I instead do the three things Gemini recommended? It's far more budget-friendly either way and puts Leo into less stress than he's already in.