[tropikitten]

My cat has been on steroids and aminophilline for asthma for about a year and doing well. He's also been drinking great amounts of water since I started him on the steroids, but his blood was tested and came back at non-diabetic levels.
Lately, he has lost a lot of weight and has stopped eating. He lays at his water bowl constantly and drinks and drinks and drinks, yet today when I brought him to the vet we found that he was dehydrated! His ketones were normal, his liver and kidneys were fine, but his blood sugar was high (though not tremendously high). His potassium levels were low. I also noticed yesterday that he seems a little stiff in his hind legs when he walks, and he's slow. I'm worried sick. Any ideas???