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No, hormonal problems generally do not cause signs of itching in dogs. As a matter of fact, skin problems and hair loss with a lack of itching are the flags for considering hormonal problems in dogs. Also, 14 months would be an exceptionally young age to develop any hormone related illnesses.
If you haven't treated your dog for sarcoptic mange, that would be a good first thing to do since even rigorous examination of the parasite very frequently fails to make a diagnosis of mange. Treatment is safe and relatively inexpensive.
Blood testing for inhalant allergies actually has been shown to be as effective as intradermal skin testing. The problem is that using allergen injections to treat the allergy has a significant failure rate.
Finally, food allergies should be considered. I believe that the best food to feed to test for food allergies is Hills z/d ultra. It contains hydrolyzed proteins that should not stimulate the dog's immune system. This needs to fed exclusively (not so much as one snack) for a minimum of 4 - 6 weeks.
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No doctor patient relationship is formed by this communication. This advice is no substitute for a complete physical examination and appropriate diagnostics provided by a licensed veterinarian.
She has been tested for mange and fleas ( negative, treated with an oral flea prevenative ). She has been on Hills ZD ultra. She seemed to be better, but then coming into heat, she began chewing on herself, intense scratching again. The first episode started with her first heat. There was a period of about 4 weeks before her second heat when she was pretty good. There is much snow on the groud now and it is cold so I doubt it is outside allergens and the ones in the house should have remained constant so I don't think it is environmnetal allergies.
Is it possible she is allergic to cat poop? We did find her eating that a couple days ago, right before the itching began again.
My frustration lies in inconsistancy of vet advice. Just earlier this morning on this web site, I was told hormones were most probably the cause and to spay her. ( which I will do anyway when I'm sure she doesn't need those hormones.) I just don't want to spay her and find out she's worse because she needed those hormones.