We knew from the start she was ill as she was the runt of the litter and had to be bottle fed her mum didnt want anything to do with her (as is often the case). When she started feeding her head wobbled from side to side and most of the food ended up on the floor, she is only small for her age and has always had poor eye sight. I asked a vet about it once and she said she wouldn't live a long life, obviously she was wrong as she is still going strong after all these years. She can sometimes be unsteady on her feet and panics now and again and we have found she will not entertain a well kitten being brought into the house but will love any poorly kittens we have had (sounds silly but its true). There are some decent web sites on illness in cats these days if you go to ask.co.uk and type in cat care you should find help there. Hope this helps put your mind at rest ....snigsthecat