Anxiety, possibly demonstrated by pacing
Respiratory distress or hyperventilation
(Breeds with flat noses may exhibit this earlier because of compromised airways.)
Dark red gums
Increased internal body temperature
Your cat's internal temperature should be between 100.5Â° and 101.5Â° F. A temperature of 104Â° or more is a definite warning sign. Here's how to take kitty's temperature.
You can help your cat survive extremely hot weather by keeping him indoors in a cool interior room. Rubbing him down with a damp towel will help; so will immersing his feet in a tub of cool water. Wrapping a cold compress under the cat's neck will also help cool him off. He may fight at first, but most likely will appreciate it once he gets used to the idea. Make sure your cat has several bowls of cool water available. It doesn't hurt to drop an ice cube in once in awhile. Strangely enough, cats affected by external heat may refuse to drink water, exacerbating the problem of dehydration, so you may want to "force" water by using an eyedropper or syringe. Be careful not to shoot the water down his throat as it can enter his lungs and/or cause choking. Just dribble a drop or two at a time in the corner of his mouth will help hydrate him and draw his interest to drinking on his own.
If your cat exhibits any of the signs above that lead you to think he is suffering heat exhaustion, cool him down as quickly as possible by immersing him in cool water, and then wrapping him with wet towels. Then get him to the veterinarian immediately. This is a serious, potentially fatal condition.
I took this off a cat site I belong to. But your cat needs to go the vet, what you are describing *could* be related to a head injury or trauma to the body from being hit or struck with something.