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 Ear Mites

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تاريخ التسجيل : 25/01/2010
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مُساهمةموضوع: Ear Mites    الخميس ديسمبر 02, 2010 2:05 pm

Ear Mites



[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]
Image (taken through microscope) of ear mites
sampled from a cat's ear.

[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]




Ear mites are tiny parasites that live out their life cycle mostly inside the ear canal. They are quite common, and can cause severe irritation and itchiness of the ears.

The most common ear mite of cats and dogs is Otodectes cynotis, and therefore an infestation with ear mites is sometimes called "otodectic mange."

Cause

Ear mites primarily live in the ear canal, where they feed on skin debris. Their presence causes inflammation, and can also lead to secondary ear infections.

Eggs are laid in the ear, and it takes about 3 weeks for eggs to hatch and develop into adult mites that can reproduce.

While ear mites are generally found in the ears, they can also wander out onto the body, causing irritation and itchiness of the skin as well.

Risk Factors

Cats are more commonly affected than dogs. Ear mites are spread mostly by direct contact with another animal that has ear mites (they are commonly seen in outdoor cats). They are especially common in young animals.


Signs and Symptoms of Ear Mites

  • head shaking
  • scratching at ears
  • dark waxy or crusty discharge from the ears (looks a bit like coffee grounds)
  • sometimes there will be scratching or irritation of other parts of body
Treating Ear Mites

There are several alternatives for treating ear mites, and your veterinarian will recommend a treatment protocol for your pet. Over the counter medications are often less effective or require extended treatment times compared to medications prescribed by your vet, especially the newer medications that require a single application to be effective.

First, a thorough cleaning of the ears can help clear the discharge to help calm the irritation and remove some of the mites.

This can be followed up in several ways:



* one-time treatments applied to the ear: medications such as Acarexx® or Milbemite® (cats only)

* one time treatments applied to the skin: medications such as Revolution® or Advantage Multi® (these are typically used as monthly parasite control medications; a single dose usually takes care of an ear mite infection but you may consider using them monthly to prevent reinfection and control other pests)

* repeated treatments applied to the ear: e.g. Tresaderm®. It is important to strictly follow your vet's recommended dosage schedule for successful treatment of ear mites (usually twice daily treatments for a week or more). Though more time-consuming to apply (and can be difficult with uncooperative patients), Tresaderm® does have the advantage of containing medications to calm inflammation and treat secondary bacterial or yeast infections.

* injectable ivermectin can also be used (this is an off-label usage for ear mites, and care must be taken as some breeds of dogs are sensitive to ivermectin)

* All pets in the home should be treated at the same time, even if they are not showing symptoms.

* Ear mites do not survive for long on humans so do not cause long term infections in people. Rarely, however, they will transiently hang out on humans, and may cause a short-lived but very itchy rash

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Ear Mites
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