Vet Derms will tell you that yorkies are notorious for allergies, so you're actually spot on in figuring that out for yourself.
To me, it sounds like enviro allergies. Some dogs can live with that, but when it starts to interfere w/ their quality of life (and it sounds like that's where you are w/ her)...then it's really time to consider meds.
If allergies are mostly all year round: use Atopica, or allergy testing / then shots, or possibly Temaril-P (not my fave for all yr bc of the constant steroid...but I would do it if it was my only choice)
If allergies are just seasonal: Oral steroids or injections, or Temaril-P
Food allergies are rare - they only account for about 10% of dog allergies. That said, it can be supportive for an enviro allergy dog to be on a diet that is low in more common allergens.
Btw, if you haven't had her thyroid checked - you prob should; anytime dogs have skin issues, thyroid issues should be considered.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~
°¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |