I have a four-year-old cat (Miss Kitty) who has had some serious
health problems for the past two weeks, and I'm getting desperate.
She started off vomiting and getting slightly listless.  I took her to
the vet who found she was extremely constipated, completely impacted.
Two days of mineral oil and soft food produced no results, so he gave
her an enema.  It cleaned her out quite effectively, but now she won't
eat, drink, play, purr, or clean herself.  She still wags her tail
when we talk to her or pet her, but after a few minutes, she walks
away and hides in a corner, in a closet or under a bed.  She seems to
want nothing to do with us, and although it sounds weird, it's as if
she's given up the will to live.  The vet can find nothing physically
wrong with her and refuses to accept that it might be emotional.
She's at the vet's right now being rehydrated.  Next, he wants to cut
her open ($600+) to see if there's any blockage in her intestine.  No
evidence of this in any x-rays or blood tests.  Leukemia and feline
AIDS tests are negative.  I want to help her, but I don't want him to
cut her open.  I believe she's had enough trauma for a while.  My
question is this:  Is it possible for a cat to become that withdrawn
(depressed?) because of the physical trials she has experienced
(constipation, vomiting, enema, barium, mineral oil forced down her
throat?)  In the past, even when she wasn't feeling well, she still
ate, drank and purred.  She's always been very obsessive about
cleaning herself, but now she shows no interest at all.  It's been
several days since she ate and has had very little to drink.  I don't
think she can last much longer and I'm at a loss.  Any advice would be
welcome.  Thanks.