Hi Clare and Smeagol
My Lily has had a similar type of thing going on...earlier this year I noticed that she had, out of the blue, developed a little patch of what turned out to be acne on her her chin and an noticing that I gave her a thorough 'once over' and found that one of her claws wasn't retracting as smoothly as I thought it should. I took her to the vet who put her on antibiotics and booked her in for a biopsy on her toe; the end result was that her toe had to be amputated and she developed e-coli AND mrsa in the wound. Oddly enough, the condition that caused the acne and the toe problem just seemed to sort itself out and cleared up all of a sudden.
Lily was fine in herself and didn't seem to be feeling particularly ill. The vet tested her for FIV and FeLV but the results came back negative.
Then a couple of months ago, I noticed another patch of acne and got her straight up to the vet...vet prescribed antibiotics and this time Lily developed Stomatitis [mucous membranes in her mouth affected], she's had a major operation which involved the removal of 9 of her cheek teeth, a week as an inpatient and having to be fed via a tube in her oesophagus. They tested her [again] for FIV and FeLV and that came back negative again.
I'm in a similar position to you because no-one seems to be able to tell me what the problem is, just that it's a immune problem. Also like you, if I try to find anything on the web I just get sites for FIV/FeLV. The vet has said that we may never be able to definitively identify what's causing all of this and it really is very frustrating. It's also worrying because Lily's second illness was much worse than her first - I dread the next one
I'm sorry I haven't got any useful websites for you but I wanted to let you know that you're not on your own
and if I do find anything useful I'll certainly let you know.
I hope Smeagol starts to feel better really soon