Hello, and thanks for you question.
The symptoms you describe may be indicative of a medical problem like diabetes, hyperthyroidism, kidney issues, ingestion of a toxic substance, or other conditions.http://www.sniksnak.com/cathealth/hyperthyroidism.html http://www.sniksnak.com/cathealth/diabetes.html http://www.sniksnak.com/cathealth/renal.html
If a cat doesn't eat, even for a short period of time, a risk of a serious liver condition called hepatic lipidosis, is possible, so it's important to find the cause of your cat's symptoms and get her eating again. http://www.sniksnak.com/cathealth/hep-lipidosis.html
You can dropper feed watered down canned cat food from the side of the mouth, slowly, at 1cc per every 20 minutes for an hour, then repeat in 2 hours. However, if your cat vomits, stop!
It will be necessary to have your cat evaluated in person by a vet, as soon as possible, and a routine blood test, plus any other necessary testing, will provide more diagnostic tools for the vet. Once your cat is diagnosed, the most appropriate treatment will be prescribed.
I hope all will be well with your kitty!
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