Feline hepatitis is an inflammation of the liver of a
cat. The liver serves to process
nutrients that are absorbed 
by the intestine and assist with
functions like metabolism, glycogen storage, plasma protein synthesis, and
detoxification of the blood. The liver also assists in digestion by producing
bile.
Liver disorders such as feline hepatitis can cause a variety of symptoms. Some of the most common symptoms are as follows:
- Lethargy
- Vomiting
- Diarrhea
- Fever
- Jaundice
- Seizures
- Behavioral changes
- Reduced appetite
- Grayish or white feces; soft feces
- Marked increase in water consumption and urination
- Weight loss
- Abdominal distention
Types of hepatitis include Infectious Hepatitis, Chronic Active Hepatitis, and Leptospirosis Hepatitis. Most hepatitis is progressive, and it is often fairly advanced before symptoms manifest themselves. Causes of hepatitis can include bacterial infections, viruses, and even the effects of some drugs. Infectious Hepatitis is transmitted between cats by contact with feces, mucous membranes, or blood of an infected cat. Leptospirosis can be transmitted not only among cats but also between humans and animals.
Because the liver is a very large organ, it will often sustain serious
damage before symptoms become apparent. Lab tests such as x-rays,
ultrasounds, blood chemistry screens, and liver biopsies are generally needed to
determine the extent of liver diseases. Feline hepatitis is normally treated
with IV fluids, antibiotics, corticosteroids, and dietary changes. Many cats
that suffer from feline hepatitis will need their livers checked regularly for
the rest of their lives.
Cats are also susceptible to hepatitis due to Feline Infectious Peritonitis (FIP). This is a deadly disease that affects only cats. Caused by a corona virus, FIP causes inflammation of body tissues, including the liver. It is not treatable and always fatal.
