Hi Mary, and welcome to Pet Talk.

So sorry to hear about your little cookie, and it sounds like she really was a tough cookie too.

Unfortunately I don't have any information on this condition, but I just wanted to say how sorry I was about Cookie's passing, and say a big welcome to Pet Talk. Hopefully your stay here will encourage you to get another little kitten - not to replace Cookie, but to help fill the void in your life since she left.