Veterinary Medicine - August 2008 - (Page 450) Demodicosis Otic swabs. Demodectic otitis externa is best detected by collecting samples from the ears with cotton swabs. Roll swabs from each ear onto a glass slide, add mineral oil, and evaluate the slide after placing a coverslip. General considerations. Although Demodex mites are part of the normal cutaneous ora in dogs, it is rare to nd mites unless there is an overgrowth. If low numbers of Demodex mites are found on a skin scraping or hair pluck, sample additional sites. Finding large numbers of mites or immature forms of the mite at other sites supports a diagnosis of demodicosis. Occasionally, an overgrowth of Demodex mites may be missed even with properly performed skin scrapings and hair plucks, especially in dogs with thickened or brotic skin due to chronic dermatitis or because of their breed (i.e. Shar-Peis, bulldogs). If demodicosis is strongly suspected but no mites are found on skin scrapings and hair plucks, skin biopsy is recommended to evaluate for the presence of mites histologically (Figure 11). TREATING LOCALIZED CANINE DEMODICOSIS Fortunately, juvenile-onset localized demodicosis resolves spontaneously within one or two months in most dogs. Thus, miticidal therapy is not required unless the disease generalizes. It is important not to use mite-speci c therapy in cases of localized disease in order to determine which patients progress to generalized disease. By not treating localized cases with miticidal therapies, dogs developing generalized disease can be identi ed and eliminated from breeding programs given the genetic basis of this disease. Furthermore, mite-speci c therapy has potential side effects and presents an unnecessary risk in patients with potentially self-curing disease. Localized demodectic lesions may bene t from topical antimicrobial agents such as mupirocin, benzoyl peroxide, 450 VETERINARY MEDICINE
Table of Contents Feed for the Digital Edition of Veterinary Medicine - August 2008 Veterinary Medicine - August 2008 Contents Editors' Note Leading Off ClinQuiz Idea Exchange Practical Matters Diagnosing and Treating Canine Copper-Associated Hepatopathies Canine and Feline Demodicosis CE Form Advertiser Index Product Preview Marketplace/Classifieds Mind Over Miller Veterinary Medicine - August 2008 Veterinary Medicine - August 2008 - Veterinary Medicine - August 2008 (Page Cover1) Veterinary Medicine - August 2008 - Veterinary Medicine - August 2008 (Page Cover2) Veterinary Medicine - August 2008 - Contents (Page 415) Veterinary Medicine - August 2008 - Contents (Page 416) Veterinary Medicine - August 2008 - Contents (Page 417) Veterinary Medicine - August 2008 - Contents (Page 418) Veterinary Medicine - August 2008 - Editors' Note (Page 419) Veterinary Medicine - August 2008 - Editors' Note (Page 420) Veterinary Medicine - August 2008 - Editors' Note (Page 421) Veterinary Medicine - August 2008 - Leading Off (Page 422) Veterinary Medicine - August 2008 - Leading Off (Page 422a) Veterinary Medicine - August 2008 - Leading Off (Page 422b) Veterinary Medicine - August 2008 - Leading Off (Page 422c) Veterinary Medicine - August 2008 - Leading Off (Page 422d) Veterinary Medicine - August 2008 - ClinQuiz (Page 423) Veterinary Medicine - August 2008 - ClinQuiz (Page 424) Veterinary Medicine - August 2008 - ClinQuiz (Page 425) Veterinary Medicine - August 2008 - ClinQuiz (Page 426) Veterinary Medicine - August 2008 - ClinQuiz (Page 427) Veterinary Medicine - August 2008 - ClinQuiz (Page 428) Veterinary Medicine - August 2008 - ClinQuiz (Page 429) Veterinary Medicine - August 2008 - Idea Exchange (Page 430) Veterinary Medicine - August 2008 - Practical Matters (Page 431) Veterinary Medicine - August 2008 - Practical Matters (Page 432) Veterinary Medicine - August 2008 - Practical Matters (Page 433) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 434) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 435) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 436) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 437) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 438) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 439) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 440) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 441) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 442) Veterinary Medicine - August 2008 - Diagnosing and Treating Canine Copper-Associated Hepatopathies (Page 443) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 444) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 445) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 446) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 447) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 448) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 449) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 450) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 451) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 452) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 453) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 454) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 455) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 456) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 457) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 458) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 459) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 460) Veterinary Medicine - August 2008 - Canine and Feline Demodicosis (Page 461) Veterinary Medicine - August 2008 - Advertiser Index (Page 462) Veterinary Medicine - August 2008 - Advertiser Index (Page 463) Veterinary Medicine - August 2008 - Product Preview (Page 464) Veterinary Medicine - August 2008 - Marketplace/Classifieds (Page 465) Veterinary Medicine - August 2008 - Marketplace/Classifieds (Page 466) Veterinary Medicine - August 2008 - Marketplace/Classifieds (Page 467) Veterinary Medicine - August 2008 - Marketplace/Classifieds (Page 468) Veterinary Medicine - August 2008 - Marketplace/Classifieds (Page 469) Veterinary Medicine - August 2008 - Mind Over Miller (Page 470) Veterinary Medicine - August 2008 - Mind Over Miller (Page Cover3) Veterinary Medicine - August 2008 - Mind Over Miller (Page Cover4)
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