Page 130 - Rule Outs in Small Animal Medicine, Problem-oriented Assessment of Problems in Physical Examination and Clinical Pathology, 2nd Edition
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Dermatology                                                                                                                                                                                                             Dermatology
       e                                                                                                                                                                                                                                e

       Innere Medizin
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                                                                                    Head shaking/
                                                                                     itchy ears/
                                                                                    ear discharge





                                                                                    Otitis externa




                                                      Additional                                                                                                                    Only the ears
          With systemic                                 skin                                                                                                                         are affected
            changes
                                                     abnormalities



                                                                                                                                             Space-
            Hormonal      Keratinisation   Autoimmune         Allergy          Infection     Ectoparasites                                  occupying           Allergy         Infection              Ectoparasites
            influence       disorder        disease
                                                                                                                                             lesion

         – Hypo-          – Sebaceous     – Pemphigus    – Environmental    – Secondary      – Sarcoptic                                – Neoplasia (e.g.   – Environmental   – Secondary                        Mainly       – Foreign
           thyroidism       adenitis        foliaceus      allergy            bacterial       mange                                      adenoma/             allergy           bacterial      Mainly pinna   auditory canal   body (often
         – Hyper-         – Seborrhoea                   – Food allergy       infection      – Demodi-                                   adeno-             – Food allergy      infection                                      unilateral)
           adreno-                                                          – Secondary       cosis                                      carcinoma of                         – Secondary
           corticism                                                          Malassezia                                                 the ceruminal                          Malassezia
         – Iatrogenic                                                         infection                                                  glands)                                infection      – Sarcoptic      Otodectes
           (gluco-                                                                                                                      – Polyp (often                                          mange            cynotis
           corticoid                                                                                                                     unilateral)                                           – Notoedric
           therapy)                                                                                                                     – Feline aural                                          mange
                                                                                                                                         plaques



































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