I also recommend the ACTH stimulation test to confirm Cushings. My nearly 15 year GH has Cushings & is currently doing very well on Mitotane. Things will never be exactly normal again, but it is a treatable disease. The initial induction therapy with Mitotane can be a little scary. Be sure your Vet is in close contact with you & you'll do fine. Nevada had all the symptoms you described & did have hair loss. Her hair is now back, but seems heavier than before. She still looks for cool places, but here in AZ we all do that during the summer. Good luck to you. PM me if you'd like to.......Carol