j8kat said:
As per usual when we took her to the vet she was much better, barely hacking. None of course when he had a look at her.
As soon as we returned home, she started hacking again.
Not sure if this applies in this case at all but might be interesting. Guinness recently had a brief bout with kennel cough (he is vaccinated but similar to how flu shots work, you can get a different strain). I took him to the Vet, and of course, NOTHING, not a single cough, hack, dry heave, NOTHING! I kept telling the Vet "really, he has been coughing something awful..."
Well, she told me it is quite common for hacking/coughing symptoms NOT to show up at the Vet because the dog's adreniline gets going, which opens up the airways in the lungs, giving them a brief respite from the coughing.
When we got home, the coughing resumed pretty quickly. (Thankfully he got over it within days, it was mild and brief vs. most stories I've heard of kennel cough).
Anyway - that may explain the lack of symptoms at the Vet and why it comes back full force at home. If it doesn't get better soon maybe you could get it on tape or something so the Vet can hear how bad it is at home.
Guinness and I send our wishes that it clears up rapidly with the meds and that she'll be fully recovered soon.