Tonee had 'cushings' and it is treatable, for many years. You'd just need blood test every 90 days. Does he have the other signs of 'cushings'? I hope the benedryl does the trick and he is just allergic to something in the air. Tonee was misdiagnosed for 2.5 yrs and they had her on a bronchial tube diolater. Waste of time and money. Blood work will tell you if he in fact he has ’cushings'.