Aloha! You're speaking to Dr. Michael Salkin
Mina may certainly be dealing with yeast but please note that yeast infections are usually found secondary to allergic skin disease in our dogs. Her previous ear problems likely were what we called "reactive ears" - ears that become inflamed, itchy and often ceruminous (waxy) and then yeast overgrew in the rancid wax. This is most often seen secondary to inhalant allergies (allergies to pollens, molds, dust and dust mites, e.g., but also seen with food allergies.

She is developing "hot spots" all over secondary to her traumatizing her own skin because of the intense pruritis (itchiness) she's currently suffering. She needs to have her "allergy attack" broken up by the administration of a corticosteroid such as prednisone. Antihistamines are not reliably effective in dogs such as Mina. Topical hydrocortisone may be helpful but isn't expected to be potent enough for Mina at this time. If Mina's vet finds that her skin is secondarily infected by either yeast or bacteria, she may be placed on antibiotics and/or anti-yeast drugs as well as the prednisone. Rigorous flea control is also essential at this time in case fleas may be contributory to her allergic skin disease.

Summer and autumn can be a very difficult time for allergic dogs. The first step in addressing her skin condition is to stop her from self-traumatizing herself...and we do that will the judicious use of a corticosteroid, tranquilizers if necessary, and even the dreaded "cone of shame" (an Elizabethan collar) that prevents her from reaching certain areas on herself that she has injured.

Please respond with further questions or concerns if you wish.