Likely, but definitely see the vet. If a vet isn't an option, try switching the food out to a good skin and coat formula (I use Natural Balance Limited Ingredient Diet) and see if they improve.
Sounds like you might have tried it, but this Natural Balance is pretty good on restrictive diets.
Also, that look. You could be in trouble, hope you don't wake up to any "gifts" in your bed from her.
Good Luck!
Natural Balance Dry Cat Food, Limited Ingredient Diet Green Pea and Duck Formula, 10 Pound Bag Fergus came from the shelter with constant diahrea, which they tested for, but had no evidence to show that it wasn't just food problems. Our vet suggested a novel protein. I found this brand and I like the ingredient list. We just call it Duck and Peas and he loves it. Also now he poops like a normal cat. We haven't tried the soft version because I hate the packaging wasted with wet food, and he drinks more water than any cat I've ever known ( not in an unhealthy way, but I've grown up with cats who I never saw drink except for from a dribbling sink). He is a healthy weight too which is pretty rare in my experience with male neutered cats
We've had fabulous luck with this brand:
http://www.amazon.com/gp/product/B000XS6RJW/ref=oh_details_o00_s00_i00
Some cats are allergic to chicken, and it's in most cat food somewhere. This brand has a few types of grain free for cats (we use the duck and pea formula) and our little itchy guy has no more problems. The wet Venison & Pea is great!
OP, can you make an Amazon wishlist? It appears that Amazon sells this type of cat food.
https://www.amazon.com/dp/B000XS6RJW/ref=cm_sw_r_cp_apa_fabc_EEoXFbBPGDKW6
Just make sure when trying new brands, whatever ingredient you are trying to see has this reaction, isn't listed at all.
You said you were feeding blue Buffalo before, which they have some limited ingredient foods for adult cats, none for kitten, but once kitty is about 7 months he can eat adult food. blue buffalo limited ingredient options.
Heres another option, a different brand, and the link has duck and salmon options. natural balance on amazon
Dont get set on thinking its chicken though, this process of finding the ingredient culprit might take a while. Just google most common cat allergies amd go down the list from there.
I would get wet food but i have to buy food my my moms cats too so i cant afford it. Which of these foods do you think might help her stomach issues?