I'm sorry that your question wasn't answered in a timely manner. This behavior
- constantly turning toward the rear - is a recognized obsessive-compulsive disorder in dogs. Obsessive-compulsive disorders are defined as repetitive, invariant, patterned behaviors that are exaggerated in intensity, frequency, and duration given the inciting stimuli (i.e., expressed out of context). The behavior interferes with health and well-being. Your puppy's scooting and perceived pain - extreme pruritis (itchiness) is expected - is usually due to atopic dermatitis
- allergies to environmental allergens such as pollens, molds, dust, and dust mites, etc. - or food intolerance. These allergies can mimic each other and one doesn't preclude the other. Atopy
is usually addressed with corticosteroids such as prednisone. The new cytokine antagonist oclacitinib (Apoquel) is preferred because it works as well as steroids without their adverse effects. It can be difficult to obtain at this time, however. A food intolerance intolerance/allergy is addressed with prescription hypoallergenic
diets. These special foods contain just one novel (rabbit, duck, e.g.) animal protein or proteins that have been chemically altered (hydrolyzed) to the point that her immune system doesn't "see" anything to be allergic to. The over the counter hypoallergenic foods too often contain proteins not listed on the label - soy is a common one - and these proteins would confound our evaluation of the efficacy of the hypoallergenic diet. The prescription foods are available from her vet. There are many novel protein foods and a prototypical hydrolyzed protein food is Hill’s Prescription Diet z/d ultra (my preference). A positive response is usually seen within a few weeks if we’ve eliminated the offending food allergen. Food intolerance can arise at any age and even after our patient has been eating the same food for quite some time. Please respond with further questions or concerns if you wish.