Exocrine pancreatic insufficiency (EPI)
Almost all cats will suffer from diarrhea at some point in their lives. In most cases this lasts no more than a few days and generally gets better without any treatment. However, in a few cases the diarrhea is due to a more serious underlying cause and does not resolve. EPI, although uncommon in the cat, is a condition that can cause chronic diarrhea by reducing the ability to digest food. This means that an affected pet will suffer from chronic diarrhea and be significantly underweight. Cats with EPI have a good appetite but despite consuming lots of food they are literally starving. Your veterinarian is best placed to advise you on any illness in your pet so if you are worried about your pet's health a visit to your veterinary practice for a check over is always warranted.