Bald Isn’t Always Beautiful – Thinking outside the Box Part One: Canine Demodicosis – What’s New
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چکیده
DEMODEX – THE MITES In the dog, the most common species of Demodex is Demodex canis. More recently, Demodex injai and the short tailed demodex, Demodex cornei have been identified. Demodex canis is a “cigar-bodied” mite measuring170-225 microns, and is transferred from the bitch to the suckling puppy within the first 3 days of life. It is considered a commensal organism of dogs and only becomes an issue in the immunocompromised pet. Clinical signs of demodicosis can range from focal or multifocal folliculitis along with hyperpigmented patches to a generalized scaling, alopecic and erythematous dermatosis also known as the "red mange". Demodex injai is a 330-370 microns long-bodied mite that causes seborrheic dermatitis on the dorsothoracolumbar region. This mite tends to affect adult dogs of 2 years or greater and the terrier breeds appear more predisposed. Iatrogenic Cushing’s and hypothyroidism are commonly associated with the presence of Demodex injai. Demodex cornei is an 80-115 micron, surface dwelling mite often found in conjunction with D. canis resulting in similar clinical findings. Diagnosis is made by hair plucks and/or pursuing multiple deep skin scrapings with mineral oil squeezing the skin midway to help increase the yield of mites. Key areas to scrape include those with hyperpigmented regions, areas with erythema and follicular casts. Be certain to lower the condenser on the microscope to increase the contrast of these translucent mites and improve your chances of identifying mites.
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Practical and update management of canine demodicosis
Canine demodicosis is a common parasitic skin disease in dogs. It can be classified into 2 types based on distribution of lesion; localized and generalized demodicosis. Localized demodicois was reported to be usually spontaneous remission, therefore, no treatment is needed. Generalized demodicosis, on the other hand, cannot heal spontaneously so miticidal therapy should be prescribed. However, ...
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