What are the most common symptoms of chronic hepatitis in dogs and cats?

Common symptoms of chronic hepatitis include lethargy, reduced appetite, vomiting, weight loss, and jaundice affecting the whites of the eyes or skin. If symptoms persist or worsen, consult your vet for further evaluation.

What tests will the vet perform to evaluate liver health?

Common tests include a blood biochemistry panel, coagulation profile, and abdominal ultrasound. When necessary, a liver biopsy or advanced imaging (CT/MRI) may be performed to clarify the underlying cause.

Does chronic hepatitis require long-term follow-up?

Yes, chronic hepatitis typically requires long-term monitoring of blood work and imaging results, with treatment and dietary plans adjusted accordingly. Regular check-ups and following your vet's advice are strongly recommended.

What home-monitoring points can help with diagnosis?

It is recommended to record daily food intake, number of vomiting episodes, changes in energy and activity, body weight, and the colour of urine and faeces. Photographs or videos of jaundice and abdominal appearance should also be taken and brought to the clinic for the vet's reference.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Chronic Hepatitis in Dogs & Cats: Symptoms, Diagnosis & Long-Term Care [2025]

Chronic hepatitis is a condition in which the liver remains inflamed for weeks or longer, potentially caused by copper accumulation, autoimmune reactions, or infections. A liver biopsy is needed to confirm the cause; long-term medication and dietary management can slow disease progression.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: WSAVA, ACVIM, Taiwan Veterinary Internal Medicine Association

When to See a Vet

Seek Emergency Care Immediately

•Unable to eat or drink for more than 24 hours
•Obvious jaundice with eyes or skin turning yellow rapidly
•Difficulty breathing, seizures, or persistent lethargy that is difficult to rouse

Schedule a Clinic Visit Soon (within 24–72 hours)

•Noticeably reduced appetite lasting more than two days
•Frequent vomiting that continues to recur the following day
•Ongoing weight loss or gradually distending abdomen

01What symptoms signal a problem?

Chronic hepatitis in dogs and cats often presents as non-specific, gradual changes that are easy to overlook at first. Common signs include reduced energy and activity, changes in appetite, vomiting, weight loss, jaundice, and abdominal enlargement. If symptoms persist or worsen, a veterinary evaluation is recommended.

Lethargy, drowsiness, or a noticeable drop in activity level
Reduced appetite or a consistently lower daily food intake
Increased frequency of vomiting or intermittent vomiting that does not improve
Gradual weight loss with noticeable changes over a short period
Jaundice: yellowing of the whites of the eyes, gums, or skin
Ascites or obvious, persistent abdominal distension

Seek emergency care immediately if you notice the following symptoms:

⚠️ Persistent, frequent vomiting or inability to eat for more than 24 hours
⚠️ Sudden onset of marked jaundice or rapidly yellowing whites of the eyes
⚠️ Severe lethargy or significantly reduced responsiveness when awake

02How to assess abnormalities at home: key monitoring points and emergency criteria

Systematic home monitoring and record-keeping helps your vet understand the progression and changes more quickly, and serves as a valuable reference for diagnosis and treatment.

Record energy level and activity daily (e.g., willingness to play or go for walks)
Track appetite and actual food intake changes every day
Note the time and frequency of vomiting; photograph the vomit if possible
Weigh your pet at the same time each week and record any changes
Observe and record changes in the colour and consistency of urine and faeces
Photograph or video the abdomen, whites of the eyes, and gums to document colour changes for the vet

03How will the vet diagnose this condition? Common diagnostic tests

Your vet will use blood tests, imaging, and where necessary pathological examination to assess liver function, structural changes, and possible underlying causes, in order to plan the appropriate treatment and follow-up.

Complete blood count and biochemistry panel to evaluate liver function markers

Coagulation profile to assess bleeding risk or surgical suitability

Abdominal ultrasound to assess liver size and structural changes

Liver biopsy (tissue sampling) to determine the pathological type and severity

Bacterial culture or PCR testing when needed to rule out infectious causes

Advanced imaging (CT/MRI) used in complex or diagnostically challenging cases

04What treatment and care are needed after diagnosis? Medications, dietary adjustments, and care guide

Chronic hepatitis is primarily managed with supportive and symptomatic treatment; long-term monitoring of blood work and imaging is required, with treatment plans adjusted based on results.

Intravenous fluid and electrolyte support to correct dehydration and metabolic imbalances
Medication prescribed based on the condition, with regular dose adjustments and monitoring
Hepatic prescription diet or nutritional management to reduce liver workload
Scheduled follow-up blood tests and imaging to monitor disease progression
Ongoing home monitoring of weight, appetite, vomiting, and jaundice
Referral to a specialist hospital or internal medicine specialist recommended for complex cases

05What to prepare before the vet visit: key information to help your vet identify the cause quickly

Note when symptoms first appeared, how they have evolved, and how long they have persisted

Prepare a detailed log of daily food intake and the number of vomiting episodes

Bring current medications, supplements, and feeding records

Bring recent blood test results, imaging reports, or previous medical records if available

Record videos of symptoms and photographs of the abdomen or jaundice for the vet's reference

Share all records with the vet and book a specialist appointment if recommended

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.