I'm totally baffled; this is so weird. We got no sleep cos Swampy paced in a manic way all night from 12 to after 4am. I couldn't get him to let me pick him up even. Nothing calmed him, not even meals (he had 2). Then this morning I didn't give him steroids (trying to move to this eve) and just gave vivitonin, antibiotic and fortekor and he is amazing. He is walking in straight lines, eating, purring, finding his tray and water, having a love in my arms etc - a different cat.
He got temporarily better last time we cut the steroids for a day - but then we lowered the dose and the next night he deteriorated badly. Gives a whole new meaning to 'rollercoaster' to see him so different just a few hours apart. I just have no idea what to do - and can't leave him to wander madly at night in case he can't find the tray as with his infection he must pee. Have emailed the vet but don't think he'll know why this is happening either.