Diarrhea in cats is a frustrating problems for owners, veterinarians, and certainly for cats, although they can’t tell us directly how they feel about it. Usually in cases of chronic diarrhea (symptoms lasting more than a week) the cat usually seems to be feeling pretty well, but if left undiagnosed and untreated over time the patient can lose weight and start to show signs of general illness, like lethargy, poor haircoat, and dehydration.
These problems are due to the effects of reduced nutrient absorption over time. Whatever the inciting agent, nutrients and water aren’t absorbed into the body, and the food that’s ingested makes its way through the intestines much faster than it should, resulting in soft stool.
It can be difficult to pinpoint the exact cause of chronic diarrhea in cats. If the diarrhea doesn’t resolve on its own (or perhaps with the addition of a little dietary fiber, like canned pumpkin) in a few days, the cat needs to see a veterinarian for an examination and testing to determine what’s going on. Here’s more information about the possible causes of diarrhea in cats, and what we do about them.