A 4-year-old spayed English bulldog presented with acute onset skin lesions. Her owners had just traveled across the state, and several days after returning home, noticed red bumps on her skin. She was not reported to be pruritic, but her skin lesions rapidly worsened.
On physical examination the dog was quiet, alert, and responsive with a rectal temperature of 102.5 °F. Her skin was painful to the touch. Clinical pictures of her skin lesions are shown in Figures 1, 2, and 3. Cytology of an intact pustule is shown in Figure 4.
Based on this information, what differential should you consider?
B: Pemphigus foliaceus
C: Cutaneous lupus erythematosus
D: Superficial staphylococcal folliculitis
(find the answer at the end of the article!)