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Why is my cat sick after being outside? Litter box, walking, seizures.

Updated on September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered

My cat, Icky got out a month ago and was out for at least three days. Since hes been back he has stopped using his litter box, can’t walk straight, isn’t gaining weight, and has started this thing where when he starts scratching and falls into what seems like a seizure where he’s scratching incessantly and biting tufts of hair out of his chest

1 Answer

Most Helpful Answer

Dr. Strydom, DVM

Answered By Dr. Strydom, DVM

Veterinarian

Published on November 29th, 2017

Poor Icky!! He sounds pretty sick and I suggest you get him to your vet as soon as possible.

I would be concerned about the seizure activity. It could be caused by something affecting the brain, causing the tingling and itching, but really being a partial seizure. Maybe he sustained some trauma while out?

It could also be what's called hyperesthesia syndrome. This is also a type of seizure activity but is more a strong sensitivity over the lower back that results in what you describe.

Cats have very strong neurologic sensation in their mid to lower back. If your cat simply has fleas or some other allergic reaction causing intense itching in that area, the act of scratching the area can elicit the neurologic response of urinating and over reaction that you describe. Check your cat closely for fleas.

Really, though I suspect something serious is going on here and he needs to be seen by a vet.
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