What's wrong with my cat?

[stigmata]

probably wants a [censored].

has it been neutered/spade? cos some female cats (esp. siamese) get really really tiresome when on heat, basically as you describe.

Also, you americans seem really wierd with cats: All the americans I have spokent to treat them as "house pets". Over here, everyone has a cat flap. My cats are free to come & go as they please, which works really well.