my older Siamese is constipated, not eating

Question
Please help! My Siamese, Tonchi, has been constipated for about 3 weeks now.  He has been examined by the vet and just recently his vet administered an enema because the x-ray showed the entire intestinal tract was filled with feces.  However, since then, my cat has not had a regular BM and when he does, it is very small in size. He continues to loose weight (from approx. 15 lbs. to almost 11 lbs. now).  He does not have much of an appetite now.  I've tried to entice him with the fishiest-smelling cat food, canned tuna (human food), and meat baby food. However, he just doesn't seem interested.  He will nibble a little but not eat much.  The vet has run tests on him and everything comes back normal.  Please help my baby! I can feel the bones on his spine.  Thank you very mcuh!

Answer
I think at this point, I would ask for a referal to a specialist, or ask your regular vet if you can get more specific.  If the usual blood values and organ values have been checked, there may be some more specialized tests that could help.  Simple things like a B-12 deficiency can cause loss of appetite and weight loss, yet this is not checked on standard blood work.  Pancreatitis is also a possibility, and while pancreatic values are usually tested for with standard tests, there are more specific tests that are far more helpful when trying to diagnose this.

You could ask the vet if he thinks Tonchi is still having problems with constipation.  If needed, he should be on a lubricant or laxative or simulant daily.  Some cats have been constipated so long that their colon loses muscle tone, and they must take medications to stimulate the bowels to move.

Additionally, Siamese are notorious for giving up easily.  A Siamese who gets seriously ill is rarely going to recover on his own.  They need to be force fed and given lots of encouragement and supportive care.  I've had to force feed Siamese for weeks before they finally bounced back and made a full recovery.  Your vet can provide you with feeding syringes, a special high-calorie food that's easy to feed, and he can show you how to give him fluids under the skin at home to make sure his electrolytes are not thrown off.

Continue to offer him food to see if he'll start eating voluntarily again.  You can feed him chicken, beef or tuna if needed.  Anything is better than nothing at this point.  My cats also enjoy chicken broth mixed with their canned or dry food.  You can give him a saucer of this to encourage hydration, too.