The latest update on Max:
I spoke with my vet today and she said the blood work came back excellent. She also had the Radiologist report and it said that he does have some minor infiltrates going on in his left lung - but so minor it could even just be normal for him. However, because of his strange cough I suspect it is not normal, even if it is very minor. It was impossible to say for sure if it is a reaction to something or a minor infection at this point.
I have an appointment on the 26th with a Cardiologist for an echo and holter. My vet feels we should just hold off on any treatment until then, unless of course he starts coughing again (he hasn't coughed since Sunday that I know of). She seems to think they will be able to tell us more, even about the lungs. I forgot to ask her but I am assuming they can also look at the lungs when they do the echo? I need to ask that.
We have added a valley fever test to the blood work and will have the results Monday - she is highly doubtful he has it but just to eliminate the possibility.
I told her about the caldesene powder I'd been using occasionally. I used a little of this under his armpits from time to time when he would develop a minor rash/redness. She and I both feel there is a very good possibility that this is the cause of his lung issue. It makes me sick that I was doing something that actually harmed him. The good news is I caught it early and the vet said if this is indeed the problem, the lung should clear up just fine once I stop the powder, which of course I have 100%!!! I've also completely stopped any kinds of spray even though she felt the powder was much more likely the culprit.
That's about it for now - I will update again once the echo and holter results are in.
Thanks to everyone who replied to this thread - even though it seems to be something minor I was a nervous wreck and it really helped just being able to talk to people who genuinely understand. I SURE wish I'd have known about DT when I had my last three.
And another little picture just now taken. He has his paws on my arm trying to tell me I spend too much time on DT!!!