The Second Rule is "When in Doubt, Call the Vet"
If your cat shows any one of the previously listed symptoms for more than 12 hours, or more than one of them for any length of time, I'd advise calling the veterinarian without delay. Obviously, emergencies are just that, and waiting any length of time could put your cat at risk.
Emergencies
Emergencies include injuries from accidents, burns, possible poisoning, insect stings or bites, seizures, or swallowing foreign objects, among others. These conditions all indicate a call to your vet during office hours, or a call to the the nearest emergency veterinary clinic after-hours. Other borderline conditions, such as sudden and ongoing projectile vomiting or extreme lethargy also merit an immediate phone call.
Our senior cat, Bubba, throws up fairly frequently, usually soon after eating. We've learned not to be too alarmed about it, because we've had him checked out by our veterinarian several times. Some cats just eat too fast and if they have a particularly sensitive stomach, they'll hurl as a result. Still, we always watch him closely after these incidents, and if he ever showed any other signs of sickness (lethargy, weakness, continued vomiting, or the significant "3rd eyelid"), we'd get him to the veterinarian immediately. We've had cause to do so on a couple of occasions.
The Third Rule is "Know When to Search the Web"
The Internet offers a wondrous variety of information for those seeking it, and the wealth of veterinary articles about various diseases and conditions is a good example. I'm as quick as the next person to point the mouse to seek out more information about a particular condition, as I've done with Bubba on more than one occasion. But I did so, only after our veterinarian had examined Bubba and started a course of treatment. I'm sure our vet thought I was a pest, because I'd read an article and call him, saying, "What about this or that potential diagnosis?" He was understanding though, and put Bubba through every test I suggested, just to ease my mind. He also listened when I suggested some alternative treatment I'd read about. If he thought a holistic remedy might help, but more importantly, would do no harm, he'd give it a try. Otherwise, he would explain why it might not be appropriate.
The bottom line is that if you cat exhibits any unusual symptoms or a combination of symptoms, pick up the phone first, and after your veterinarian has examined kitty and prescribed a course of treatment, then pick up the mouse and surf to your heart's content, for a better understanding of your cat's condition.
