| Have you been to your vet? There are other parasites that can cause itchy/flaky skin - sarcoptes, cheyletiella.
Also would recommend a full thyroid panel (ex. Michigan State Univ) to rule out that as a contributing factor.
Food allergies can occur, but it is rare for them to be the only thing dogs are allergic to. Inhaled allergies (pollens, molds, dust, etc.) are MUCH more common. |