Easter lillies and other toxins cause acute kidney injury in cats, which can be reversible if treated promptly and agressively.
Many cats, however, develop chronic kidney disease, especially as they get older. Chronic kidney disease is a progressive disease. It cannot be cured, but the progression can often be slowed, especially if caught early. As your cat ages, routine blood work should be performed on a regular basis to evaluate the kidneys.
Symptoms of advanced chronic kidney disease include excessive thirst, increased urination, listlessness, decreased appetite, vomiting, and weight loss. Cats who exhibit any of these signs should be evaluated by a veterinarian.