My girl cat Teirza has in the past four days begun screaming. She screams in the morning. She screams when we go out the door. She screams when you walk by her. She screams when she's alone.

Nothing else seems to be wrong!!!! She's eating, drinking and playing as much as usual. She'll stop for a little while, but if she's awake it's usually within a half hour that she'll start screaming again.

I say screaming because its louder than any meowing she's ever done. Her eyes and nose are clear, her ears are clean and cool.She's spayed. She is part Siamese which I understand is naturally loud anyway.

How do we get her to shut it!!!!