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Applied Dermatology: Postcard Presentation: A Miniature Pinscher With Alopecia

    Figure A.

    Diagnosis: Sebaceous adenitis.

    Biopsy confirmed a diagnosis of sebaceous adenitis. Samples revealed an inflammatory infiltrate targeting the sebaceous glands, with some sample sites having a complete absence of glands. Strong breed predilections for sebaceous adenitis have been found for standard poodles, Samoyeds, Akitas, vizslas, and miniature pinschers, with an autosomal recessive mode of inheritance being proposed in standard poodles and Akitas. While the etiology of sebaceous adenitis remains unknown, ultimately, destruction of the sebaceous glands leads to clinical signs of scaling, follicular casting, and adherent scale. Over time, coat quality becomes poor, dull, dry, and brittle. In short-coated breeds such as the vizsla and miniature pinscher, sebaceous adenitis can have a slightly different clinical presentation. In these breeds, clinical lesions can consist of annular, partial to diffuse alopecia; adherent scale; and casting.

    Treatment: Treatment for sebaceous adenitis includes cyclosporine, propylene glycol sprays, antiseborrheic shampoos, and management of secondary infections. This patient could not tolerate cyclosporine but responded very well to propylene glycol sprays and bathing with benzoyl peroxide (Figure B).

    Figure B.

    Postcard Presentation cases originally appeared as part of a postcard series produced by Animal Dermatology Clinic, headquartered in Tustin, CA.