Thanks Gill for your good wishes and Liz for your helpful advice. He's not so great today. Will decide re. the steroid after some more research I think and another chat with the vet. A friend has told me her experience of the drug is not positive - her dying cat (kidney failure) went completely ape after the injection, running around the house up and down stairs and generally going mad - this was a 20 yr old cat and she feels it hastened his death. Anyway, will make up my mind by Monday. Thanks again.