My cat was in a fight a couple of weeks ago. She came in with a few seemingly superficial injuries. The vet patched up her up and she seemed to recover and was out catching mice a day later but a couple of days after that she went down hill suddenly. She stopped eating a drinking and went a listless and floppy. The vet was very worried and put her on a drip for a couple of days and gave her antibiotics. She's been back to the vets several times since and They also did a raft of tests, blood tests, an xray and ultrasound - none of which turned up any problems.
She's back at home now and better than she was but she's by no means back to her old self. She's barely eating and has lost lots of weight and she's not interested in going outside. The vet says the next stage would be exploratory surgery and a feeding tube but I'm reluctant to put her through that when they don't have any idea what's wrong. I'd really love to have her for many more years but she's fourteen and I wonder whether her age means that she's having difficulty recovering from the infection. She hates going to the vets and being in hospital and I don't know how to decide when to stop and just to try to make her comfortable. Any advice would be appreciated.