Female cat with CKD and hyperthyroidism is vomiting a lot. What's going on?

A person on social media asked for some advice because their cat is vomiting and they are suffering from chronic kidney disease and hyperthyroidism. They are seeing a veterinarian but they wanted to bounce the problem off other social media users one of whom is me. Of course, I strongly advocate seeing a veterinarian and this person has seen a veterinarian about the recent developments and will see them again.

Image: MikeB

This is my brief response:

"I am not a veterinarian but I know cats very well. Your cat has chronic kidney disease. She is vomiting. Is there a link between chronic kidney disease and vomiting? That is the question that comes to my mind.

There is a connection. Signs of uraemia which is toxins in the blood because they are not being eliminated by the kidneys, can result in vomiting, diarrhoea and anaemia.

There are other symptoms. So, it's just possible that the chronic kidney disease may have advanced more than is believed.

That said, the vomiting might not be linked to the kidney disease. Domestic cats vomit very well and competently for a large number of reasons and those reasons might not be associated with her chronic illness.

Has the vet done a urine test for blood urea nitrogen (BUN) and creatinine? I would ask the vet about that asap. 

I don't think vomiting is linked to hyperthyroidism. Hope this helps a bit and the best of luck."

Do any readers of this post have any other thoughts out of interest?