Hi Dr. Jeff,
Thank you so much for this info! She (Maddie) is actually on prednisone now because she has a slight asthma problem (they saw a few small "circles" in her lung x-ray), but they can't figure out why the problem seems to be actually in her nasal passage, as the wheezing/gurgling noise comes from her nose/sinus area when she has a hard time breathing. Here's the weird thing - when she sleeps, her breathing calms down and she doesn't wheeze and is quiet and seems to breathe "normal". Why is that?
Yes, it is prednisolone, sorry! Ok, yes, all you said makes perfect sense. I'm going to try and give her a little antihistamine as you suggested and see if it helps. They actually ran an MRI on her and saw nothing! She is just baffling to them! Yes, she doesn't wheeze all the time either when she's awake and she is in good health otherwise. She's been this way for two years, so I think it will just be that she's a wheezing kitty.
Ok, I am going to accept your answer now, Dr. Jeff - thanks so much again - very very helpful!