Why does my cat pee when I pick him up?

How old is your cat ?

He is approximately five years old. He was recently treated for cystitis of the bladder and his urination has become less painful so he pees more frequently. He also has to stop and pee as soon as he makes a jump, like on furniture or even my lap. I don't usually discipline him because of his recent illness, but I would like for things to return to normal. He used to be much more attached at my hip, affectionate, and now since he got sick it has almost stopped. The last week he has been coming around more frequently and I have began brushing him on a regular basis. He seems to like that a lot.

Of course you don't discipline him. None of this is his fault. He may be peeing a lot for the rest of his life, including when you pick him up. This should have been a given after he was treated and mentioned when you asked your question. If you 'want things to return to normal,' find the poor cat a new home. What does the vet say about recovery long term?

Yeah I meant his personality. I love my cats regardless of any urination in the house. He will remain here. I just got off the phone with the vet she said it was probably behavioral. And, joypulv if you have nothing productive to say except get rid of my child then don't help... Cause that is not an option, but thanks for your rudeness.

Owing to his condition, I don't know what to suggest, other then be careful where you pick him up. Don't pick him up underneath towards the back where his bladder is located. Pressing on the bladder while being suspended may be the reason he is urinating when you pick him up.

Tick

It's very possible that his bladder muscles were weakened by his illness, and maybe even the treatment.

It sounds like he is incapable of 'holding it.' short of finding kitty diapers, there may not be anything you can do about it. He may be incontinent for the rest of his life, or the muscles may gradually regain strength.

If the vet thinks it's behavioral, which it doesn't sound like to me (although I am NOT a vet, and may be wrong), then all you can really do is wait and see. If there is a change, it'll probably be VERY gradual, and take place over the spans of months, or even years.