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What people say makes us excited::
Persistent diarrhea may signal disease
Dr. Kevin Wright
The Pet Doctor
Jan. 22, 2005 12:00 AM
QUESTION: My dog has had diarrhea for several days. Do I need to take him to a veterinarian?
ANSWER: Diarrhea is the term used to describe defecations that occur at a more-than-normal frequency and consist of stools that are not as well formed as normal. Diarrhea can result from a problem with the small intestine, large intestine, liver or pancreas, or many organs other than in the digestive tract. Because the treatment for one type of diarrhea is likely not to be effective for a different type, a veterinarian needs to examine your dog.
Observe how often your pet goes to the bathroom and what the stools look like in order to help the veterinarian diagnose what is wrong. The small intestine is important for the digestion and absorption of food. Diseases of the small intestine don't increase the frequency of defecation much, as typically an afflicted dog will pass stools three to five times a day. These stools will be larger in volume than normal, but the dog doesn't need to strain to pass them. The stools may be darker than normal if the disease causes bleeding of the small intestine because blood turns black when digested. Some small-intestine diseases cause a lot of abdominal gas and flatulence. Vomiting and weight loss accompany certain small-intestine diseases.
Large-intestine disease causes a large increase in the frequency of defecation, usually more than five times a day, and an indoor dog may have accidents in the house. A dog will often appear to strain with large-intestine diarrhea and may appear uncertain as to whether it is done. The volume of stool passed with each event is much smaller than normal. Large-intestine diarrhea usually contains a lot of mucus and may be tinged with fresh blood. Vomiting and weight loss are uncommon with large-intestine diseases.
Common causes of small- and large-intestinal diseases are viruses, parasitic worms, food allergies, changes in diet, ingestion of foreign bodies, inflammatory bowel disease and tumors. Many other diseases, such as liver disease, kidney failure and hyperthyroidism, cause diarrhea.
Some diarrheas, such as those caused by mild viral diseases or a change in diet, are transient. Resting the intestine helps; withhold food for 24 hours but give access to plenty of fresh water. Then put the dog onto a bland diet such as boiled hamburger and rice. If the diarrhea resolves, the dog may be gradually reintroduced to its normal diet.
Because there are many serious diseases that cause diarrhea, you need to take your dog to the veterinarian if the diarrhea persists for more than two or three days.
Wright is director of conservation, science and sanctuary at the Phoenix Zoo. Write to him at doctorkevin@thephxzoo.com.
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