Here are some diseases I found on http://www.webkinzinsider.com/forum/f237/warrior-code-medicine-cat-handbook-clan-334733/
Greencough- Gives you a bad fever and a terrible cough. It can only be caught in leaf bare; you can die from it if you get sick enough.
Chill- You get a runny nose and a fever. You can catch it from getting wet in cold weather, and you can't die from it.
Whitecough- Gives you a bad cough and fever, it can turn into green cough. It can't kill you.
Cats Eye- Makes eye crust over; can cause blindness.
Bug Ears- Bugs crawl around in ear, making it itch and ooze. (Ear mites.)
Rabies- Gives you a fever, foamy mouth, and dizziness. There is no cure for it, and if you get it you will die. You can only get it from another animal that has it or getting infected in a cut.
Death disease- It gives you severe pain in every area, and will eventually kill you. You get it from ticks and mosquitoes. (Lyme disease.)
White Paw - Your paw pads turn white, and give off severe pain if you walk on them. You get it in leafbare when your paws are cold for a long period of time. (Frostbite.)
Scarlet fever- You get a severe fever. Can only be received by kits in leafbare, from being cold.
Neetle- You get a high fever and you throw up a lot. You can get it any time of the year, there is no known cause for it.
Blackcough- The deadliest form of the 'Coughs'. If you catch it, you are most likely to die. Comes right after Green Cough. Can kill if not treated soon enough.
Chill- You get a runny nose and a fever. You can catch it from getting wet in cold weather, and you can't die from it.
Whitecough- Gives you a bad cough and fever, it can turn into green cough. It can't kill you.
Cats Eye- Makes eye crust over; can cause blindness.
Bug Ears- Bugs crawl around in ear, making it itch and ooze. (Ear mites.)
Rabies- Gives you a fever, foamy mouth, and dizziness. There is no cure for it, and if you get it you will die. You can only get it from another animal that has it or getting infected in a cut.
Death disease- It gives you severe pain in every area, and will eventually kill you. You get it from ticks and mosquitoes. (Lyme disease.)
White Paw - Your paw pads turn white, and give off severe pain if you walk on them. You get it in leafbare when your paws are cold for a long period of time. (Frostbite.)
Scarlet fever- You get a severe fever. Can only be received by kits in leafbare, from being cold.
Neetle- You get a high fever and you throw up a lot. You can get it any time of the year, there is no known cause for it.
Blackcough- The deadliest form of the 'Coughs'. If you catch it, you are most likely to die. Comes right after Green Cough. Can kill if not treated soon enough.