Yellow discoloration of the gums, whites of the eyes, inner ears, or skin is called jaundice or icterus. It occurs when bilirubin accumulates in the body and is a sign of disease rather than a diagnosis by itself.
The First Decision Is Urgency
A cat with newly yellow gums, eyes, or skin should be evaluated promptly. Jaundice can result from red blood cell destruction, liver disease, or blockage of bile flow. Food refusal, vomiting, weakness, dark urine, or rapid worsening increases urgency.
Where Yellowing Is Easiest to See
Look at lightly pigmented gums, the whites of the eyes, and the inner ear pinnae in good light. Mild jaundice can be subtle, so comparison with the cat’s normal color can help.
Three Broad Categories of Causes
Before the Liver
Rapid destruction of red blood cells can generate more bilirubin than the liver can process.
Within the Liver
Liver inflammation, hepatic lipidosis, toxins, infection, and other liver disorders can interfere with bilirubin handling.
After the Liver
Obstruction or inflammation affecting bile flow can prevent bilirubin from leaving the body normally.
Why Appetite Matters So Much
Cats that stop eating can develop hepatic lipidosis, particularly when overweight. Jaundice combined with several days of poor intake is therefore especially important to address quickly.
Other Signs to Watch For
- Dark yellow, orange, or brown urine
- Vomiting or diarrhea
- Weight loss
- Weakness or hiding
- Abdominal discomfort
- Pale gums in addition to yellowing
What Not to Do
Do not try to treat jaundice with supplements or force-feed a nauseated or weak cat without veterinary advice. The underlying cause must be identified.
What the Veterinarian May Check
Evaluation often includes bloodwork, urine testing, and abdominal imaging. Additional tests may be needed to distinguish red-cell destruction from primary liver disease or bile-flow obstruction.
Jaundice Is a Sign, Not a Liver Diagnosis
Yellow tissue tells you that bilirubin has accumulated, but it does not tell you where the problem started. Red-blood-cell destruction, liver dysfunction, and impaired bile flow can look similar from the outside and require different treatment.
If the cat is also eating poorly, tell the veterinarian how long intake has been reduced. Cats—particularly overweight cats—can develop serious liver complications when they do not eat enough, so appetite history is an important part of the workup.
Do Not Wait for Worse Signs
Jaundice in cats is a significant finding. Because it can reflect blood disease, liver disease, or bile obstruction, new yellow gums or eyes should prompt veterinary evaluation rather than home monitoring.
Related Virixoo Guides
Read why a cat’s urine may turn dark brown or orange. Read why appetite loss in cats matters. Read what pale gums in cats can indicate.
