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Veterinarian Technician July 2013 (Vol 34, No 7)

Final View: What’s Eating Oreo?

by Kelly Singer, CVT

    Oreo—a 1-year-old, 79-lb (35.9-kg), spayed mixed-breed dog (Newfoundland/poodle)—presented with chronic, progressive skin disease that started at 6 months of age (FIGURE AFIGURE B). Physical examination findings included generalized follicular casts, severe deep pyoderma, bleeding feet, and purulent discharge from multiple areas, including the feet, back, and abdomen. The patient was febrile, with a rectal temperature of 104.7°F (40.4°C; normal range: 100°F to 102.5°F [37.8°C to 39.2°C]). Multiple cytology samples revealed abundant cocci and pyogranulomatous inflammation. The deep skin scrape was positive for Demodex canis mites of all life stages. The primary diagnosis was juvenile-onset general demodicosis. The patient also had a severe deep pyoderma secondary to the mites.

    The pyoderma was treated with cephalexin (1 g PO q12h for 3 wk) followed by clindamycin (150 mg [three capsules] PO q12h for 3 wk). The demodicosis was treated with ivermectin (10 mg/mL at 1.4 mL PO q24h). The patient was receiving a monthly heartworm preventive when she came in for her first appointment. After 8 months of treatment with ivermectin and two negative skin-scrape results that were 1 month apart, Oreo was doing much better and had a full haircoat (FIGURE C).

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