7 wk old kitten has diarrhea that won't go away

Hello,

I need some advice on my kitten. She is just about 7 weeks old and has had diarrhea pretty much since I brought her home. The person I got her from was feeding her adult cat food so I switched her to EVO kitten wet food. I took her to the vet and she does not have any worms or any parasites. They believe it is dietary so they gave me low res food that she has been on for 2, going on 3 days and still has diarrhea. My other cat had a similar issue when she was a kitten but the low res food helped her the next day. She's also not been too good about using her litter box. She has at least one accident a day. I think this is mostly because she is not feeling well more so then her not being trained because she does use it. Anybody have any advice on foods or something to help stop the diarrhea? My other cat has a sensitive stomach and eats nature's variety and that works great for her. I have not really tried the kitten on that because I didn't want to keep changing up her food. 

Any advice would be helpful. Thanks!

You might try switching her back to the food she was on when she came to you.  Sudden transitions can upset their stomachs especially when they are babies.  If I were you, I would call and ask them if she had diarrhea when she was with them.  Make sure they don't think you are accusing the of anything and that you just want to know because you changed her food and think that might have caused it, so you need to know if she was pooping normally when she was with them.  It is not unusual for kittens to have diarrhea for any number of reason, even a change in their water can do it (which is why I always use bottled water for kittens and make sure the new families do too for awhile.  Sometimes we spend too much time on trying to figure out WHY they have diarrhea instead of figuring out how best to treat the symptoms.  Often your vet may prescribe Albon liquid, which is used to treat a number of intestinal protozoan type organisms.  A probiotic like Sacharomyces boulardii added to their food is sometimes enough to do the trick also. If she is having accidents around the house, you may want to confine her to a small room like a bathroom with a low litter box handy. 

Also, a kitten that small needs more litter boxes for now because just like children, they get busy and may be too far from "the bathroom"  Red Top Rescue gave good advice. Might give your vet a call tomorrow and see if you need a prescription or can purchase the Albon liquid.