Diarrhea (Long-term) in Dogs
Chronic Diarrhea in Dogs
Chronic diarrhea is a change in the frequency, consistency and volume of the dog's feces for more than three weeks. Starting in the small or large intestine, diarrhea can either be secretory (where it is very watery) or osmotic (not watery), and is due to various reasons, including diet, disease, or infection.
Chronic diarrhea can affect both dogs and cats. If you would like to learn more about how this condition affects cats, please visit this page in the PetMD health library.
Symptoms and Types
Symptoms found when it originates in the small intestine may include:
Symptoms found when it originates in the large intestine may include:
Small intestinal abnormalities which can cause diarrhea include:
Large intestinal abnormalities which can cause diarrhea include:
Your veterinarian will try to identify the origin of the diarrhea -- the small or large intestine -- by taking a complete history of your dog's health and onset of symptoms. Your doctor will then perform a thorough physical exam on the dog, or the doctor can perform an endoscopy and take biopsies from the intestines. Fecal samples, blood chemical profiles, urinalysis and electrolyte panels can help in the diagnosis, as well.
Depending on the underlying cause of the diarrhea, there are many other tests which can be performed. For example, if your veterinarian suspects pancreatic disease they will test for pancreatic function, while abdominal X-rays and ultrasounds can be used to find a foreign object in the intestines. Other exams can test for intestinal malabsorption, adrenal function, or for serum bile acids; these acids can be identified by taking blood samples.
An in-depth examination of the properties of urine; used to determine the presence or absence of illness
A type of slime that is made up of certain salts, cells, or leukocytes
The exiting of excrement from the body; bowel movements.
The fluid created by the liver that helps food in the stomach to be digested.
The impairment of nutrient intake into the intestines
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