nods... we eliminated all grain first. Didn't help. Not sure what her cause was...because I gave her Zyrtec and the fur grew back... her sister/littermate though.. has scabs up and down her back...then she licks them while she's bathing and won't let them alone. I'm thinking hers is food. We've done the limited ingredient by perscription duck and pea or something like that...but she would not eat. We then eliminated proteins like chicken... for 2 months... nothing. Then fish for 2 months...nothing...probably wasn't extensive enough in our trial. Zyrtec did nothing for this one... so that's why I think it's food related. We did flea treatment .. she's indoors only but nothing helped thus far. They were (well Min has passed) both on Fancy Feast Classic pate' wet, and Avoderm pea and duck dry... both don't have grains...but obviously grains isn't the problem ...boo.