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.
Irritable Bowel Disease
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.
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.
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.
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.
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.
Such intestinal parasites as roundworms, hookworms, coccidia and giardia can cause diarrhea and weight loss. All are treated with medication.