He did have a strange problem last May when he had some kind of seizure, at least we think that's what it was. We found him almost lifeless on his side on the bottom of his cage and we thought he wouldn't last long, but he recovered within a day and there weren't any lasting signs, not even any kind of weakness or tiredness, as far as we could see. We did try him with some vitamin drops but even with the absolute minimum it still puts him off his water so we haven't tried that very often.
Does it look like he has a lump on his front? We only have the one so we don't have anything to compare him to, I've only recently noticed and looking at some photos of others I'm worried now

Thanks for any help.