M.H.
I've had experience with Blastomycosis, not personal experience though. I've seen several dogs with it. I recommend treatment, assuming it is Blasto. . . Therapy is expensive, but if you do some digging, you should be able to find cheaper therapy from Canada. It does require long-term therapy, the dogs I've seen do improve with time (over 3-4 weeks). Some strains can be very difficult to treat and the prognosis is generally guarded. If you can afford therapy, it may be worth a try.