Weight loss in cats is always cause for concern. Coupled with diarrhea, it's usually a sure sign something is wrong. If your cat is losing weight and has diarrhea, don't delay. The cat needs to see a veterinarian as quickly as possible.
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Irritable Bowel Disease
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Among the symptoms of irritable bowel disease (IBD) are diarrhea, vomiting and weight loss. Sometimes all it takes to relieve the symptoms is a change in diet. Other therapies include the use of medication, usually Prednisone.
Hyperthyroidism
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Some untreated hyperthyroid cats have diarrhea, along with weight loss despite a ravenous appetite. Thyroid medication or a radioactive iodine injection are the treatments for feline hyperthyroidism.
Pancreatitis
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Along with diarrhea and weight loss, symptoms of pancreatitis include lethargy, dehydration and loss of appetite. Treatment often includes subcutaneous fluids, pain medication and nutritional support.
Pancreatic Insufficiency
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Cats with pancreatic insufficiency usually produce a high volume of loose or semiformed stools. The most common treatment for pancreatic insufficiency is adding pancreatic enzymes to the cat's food.
Intestinal Lymphoma
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The symptoms of intestinal lymphoma include vomiting and diarrhea, weight loss, and a rough hair coat. Chemotherapy is one of the treatments used for lymphoma in cats.
Intestinal Parasites
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Such intestinal parasites as roundworms, hookworms, coccidia and giardia can cause diarrhea and weight loss. All are treated with medication.
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