Signalment: 5 year old neutered male Pitbull Terrier
Clinical History: Clinical History: 3 year duration variable, asymmetrical crusts and hair loss starting on bridge of nose (haired skin). Current medications include modified cyclosporine A, prednisone, sublingual allergen immunotherapy for 6 months. All limbs (except right front foot from carpus distally), ventral neck, ventrum (chest abdomen, inguinal), medial thighs, tip of tail, dorsal tail gland area, entrance to ear canals are alopecic, with papules, pustules, and small circular to coalescing crusts. The nasal planum is smooth with moderate depigmentation. There are erosions, ulcerations, crusts, hyperkeratosis on the footpads. Pustule cytology – neutrophils, possible acantholytic cells, no cocci.
October 2021 - What is your diagnosis?