Any help or advice would be welcome ... am feeling pretty helpless.  Last Friday (a week ago), my beautiful 11 year old furbaby Corbin had a left front leg amputation due to a severe infection in his paw which we'd tried to get rid of by medicating for the last 3 months but it was in vain and the infection was still in his paw.  Leading up to the Surgery, I extensively researched what we could expect to go through.  None of the case study's mentioned anything close to this.  I got him home on the Saturday afternoon, he was still pretty groggy but was eating and seemed to be happy to be at home.  He even ran around a little but was quite stressed out about the collar they'd put on him (has always been terrified of things around his neck ever since he was a kitten).  The weekend seemed to go smoothly, until Sunday night, about an hour after I gave him his meds (Metacam and something else less dramatic I can't remember the name of), I put down some food for him on the floor in my room (he sleeps there too) and he got up, went to walk, fell over (maybe only then realising he didn't have a leg there anymore?) and absolutely freaked out.  He went from my sweet boy to a possessed cat.  I've never seen anything like it and I never want to ever again - I've tried to search for something simular on youtube but none are anywhere near as bad as this was.  He was under a table when it happen and smashed himself into the table multiple times, out into the open (I'm running from the other side of the room to get him), up onto a shelf, he was about 5 foot high at one stage and was thrashing around.  It wasn't something he could control.  It was like his brain was having a complete and absolute panic about his leg.  Which I get, it must be traumatic for him - we knew it was coming but he didn't, poor fella.  I got to him and had to fight to get him on the ground - he was bouncing all around, like a crazed cartoon.  I was terrified for him and was sure he would've done some damage. I pinned him down on the ground, trying not to cause any damage and calmed him down but his eyes were really dilated and he seemed so angry.  Now he's a lil black cat and I'm an strong athletic 5.10 female that plays rugby (am a kiwi) - I am more bruised and battered from this, than any rugby game.  My flatmate thought someone had broken into our house (he was as loud as a human and smashing things) and ran into my room.  As soon as she did, he bolted out of my room, over her, down the stairs (he wasn't even walking an hour earlier) and then he developed super human powers and smashed through the locked cat door and outside.  My world stopped, I thought I'd lost my boy.  We all went out and searched the neighbourhood with touches, even met a few neighbours that knew him (he's obviously very social when we're at work - they call him the good looking mouse catching cat).  He hopped back home an hour later, I was waiting outside just in case and he was calmer but still had fury in his eyes.  Unbelievably no damage either and his dressing was still intact and not bleeding.  I took him back to my room, he was lying on the floor - I was lying down beside him and he had another "episode" when I touched his paw.  Far less dramatic this time but he moved a metre before he knew it and then managed to climb up onto the bed, where he'd normally sleep and looked so comfortable that I left him there and slept on the couch in my room and watched sleep him all night.  When he woke up the next morning, I watched him roll over onto his back - stretch his paws in front of him (like he's done a million times before) and when he saw one of his legs wasn't there - he freaked again.  I got to him just before he would've tumbled off the bed.  I noticed later on, that he'd shredded my duvet cover - I don't care about my bedding but that's how stressed he was.  I took him to the vets that morning, promptly burst into tears (what have I done to my furbaby?!) and explained what had happened, they checked him over and didn't seem to take what I'd said seriously.  They said sometimes it's hard to watch them adjust - no, this was next level.  It wasn't him adjusting.  I insisted they take him in and monitor him because something wasn't right.  He stayed for 2 nights and they said he didn't do it.  But in saying that, they left him unsupervised for a night and he got into his stitches there because they hadn't collar'd him so I'm sure they could've easily missed him having a freak out.  Since he's been back home, he's managed to remove his collar (I left him in his cage for 2 hours) and has also had a few episodes - getting a fright and his whole body goes flying uncontrollably, before he even knows what's going on.  Am keeping him in a big dog cage in my room at the moment because it's safer for him.  The episodes seem to happen either when he gets a fright or is waking up and he also seems super sensitive to everything.  He's eating well, going to the toilet normally, taking his meds and starting to hop around and work out his balance.  I've taken a few weeks off work to spend with my boy to help him re-adjust but these "panic/fright" episodes are absolutely terrifying, especially the first one.  I stay calm and talk to him and he seems to get over them quickly.  They're definitely getting less severe each day. I've experienced panic attacks myself and it seems to me like it's an amplyfied form of that - maybe mixed with post traumatic stress disorder?  Or could the meds have something to do with it?   Is there a cat version of rescue remedy?  Any help or suggestions would be so welcome ... I'm exhausted and typing this in the middle of the night, sitting on the floor beside his cage, making sure he doesn't ruin his stitches again because I don't want to put the collar on him, stress him out and have him freak out.  Ummmm Help?