In some liver diseases, brain and central nervous system abnormalities occur. Some cats have only vague symptoms, including poor appetite, occasional vomiting , weight loss, and depression. Laboratory tests are usually needed to determine the extent of liver disease. Xrays, ultrasound , and a liver biopsy may be necessary to confirm the diagnosis. Even these may not give a definite diagnosis.
Liver disease is difficult to diagnose and still more difficult to treat.
When it is caused by another disease or abnormality, treatment will be aimed at that cause. Very little therapy is available when the liver itself is involved. About all that can be done is try to lessen its work load by providing a diet with high quality protein and carefully balanced vitamins and minerals. Drugs such as choline may be helpful in some cases. Its cause is unknown, but it is more frequent in overweight, middle-aged cats.