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Efficacy of Weekly 0.1% Amitraz Dip with 4% Chlorhexidine Shampoo on Juvenile Onset Generalized Pyodemodicosis Unresponsive to Ivermectin Therapy in Japanese Chin Dog  

Jeong, Hyo-Hoon (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University)
Jeong, A-Young (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University)
Hoh, Woo-Pil (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University)
Eom, Ki-Dong (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University)
Lee, Keun-Woo (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University)
Oh, Tae-Ho (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University)
Publication Information
Journal of Veterinary Clinics / v.20, no.2, 2003 , pp. 237-241 More about this Journal
Abstract
A case of juvenile onset generalized demodicosis of one year old, intact female Japanese Chin dog weighing 3.1kg was presented to the Small Animal Clinic of the College of Veterinary Medicine of Kyungpook National University. The diagnosis was made based on the physical examination, deep skin scrapings, hematology, serum chemistry, endocrinologic evaluation and bacterial culture. Numerous D. canis mites of various stages were observed in multiple skin scraping samples. CBC, serum chemistry, $T_3$, $T_4$ and free $T_4$ values were within normal range and Staphylococcus intermedius was isolated in bacterial culture of pustules. The dog was healthy other than skin lesions at the presentation. The three different treatment protocols were tried for the case. No clinical improvement was observed during 13 weeks of orally given daily basis ivermectin therapy at 600ug/kg and 2 weeks of spot-on weekly basis selamectin therapy at 30 mg/kg with cephalexin given orally twice a day at 25 mg/kg. However, a remarkable remission was seen by 0.1% amitraz dip on weekly basis with 4% chlorhexidine bath given twice a week. The secondary staphylococcal infection and accompanied pruritus was almost disappeared in two weeks and she was recovered clinically normal in 9 weeks of therapy. The therapy was continued for 4 more weeks to prevent relapse. The dog is clinically normal and being monitored for development of any abnormal dermatological signs for the time being.
Keywords
generalized demodicosis; amitraz; ivermectin; dog;
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