Non stop diarrhea in 4 month old kitten

Recently found my kitten buzz on the street decided to take him in, vet said he was okay.

He eats

Holistic blend cat food
Blue wilderness wet food occasionally
And temptations cat treats frequently

Just wondering if it seems odd to anyone
Thanks!

Has he been dewormed?  It's very, very possible that the culprit is the food.  It's likely too rich for his system, esp the treats.

I would discuss going to a very mild wet food like human baby food stage one chicken possibly with a little Metamucil added (under vet supervision) Or even Hill's sensitive stomach food. Or Hill's I/D. Your vet should be helping you with this.

Non stop diarrhea is not normal. Did the vet do a fecal sample when you took the Buzz in? Was he dewormed? It's very likely that a parasite could have been missed on the initial fecal. There are also several that need a special test sent to an outside lab to diagnose (Giardia, Cryptosporidium, Tritrichomomas, Campylobacter, C-Diff, etc...)

Have you contacted the vet to let them know about the problem?

Many vets will start you off with a probiotic and a round of Metronidazole.

And, yes, there's always the possibility that food could be a problem; but, I always rule out medical first.

(As a side note...I personally do not care for the vet prescription diets (I/d,EN) because they all contain grains and soy.)

I agree with @CatPack that medical causes need to be ruled out first.  And I also agree that Metronidazole is very commonly prescribed in situations like this.

My cat was having diarrhea when we adopted him, and Metronidazole didn't stop it. Vet gave him Proviable and it really worked.