Dermatology 654
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Questions and Answers

Which of the following is not a potential cause for equine dermatomycosis?

  • Trichophyton equinum
  • Microsporum canis (correct)
  • Microsporum gypseum
  • Trichophyton mentagrophytes
  • A 1 year old stallion who presents with alopecia of the saddle and periocular region. Other horses in the barn have been affected with the same clinical signs. What is your top differential?

  • Dermatophytosis (correct)
  • Onchocerciasis
  • Culicoides hypersensitivity
  • Pediculosis
  • Which of the following disorders is not typically associated with pruritus?

  • Ventral midline dermatitis
  • Pinworms (Oxyuris equi)
  • Dermatophilosis (correct)
  • Pediculosis
  • All of the following are characteristics of Onchocerciasis except:

    <p>History of horse lying down and rubbing its belly</p> Signup and view all the answers

    Which of these insects causes ventral midline dermatitis?

    <p>Horn flies</p> Signup and view all the answers

    All of the following are characteristics of culicoides hypersensitivity in horses except:

    <p>Type 4 hypersensitivity</p> Signup and view all the answers

    Which of the following disorders most commonly occurs in the winter months?

    <p>Pediculosis</p> Signup and view all the answers

    True or False: The use of Ivermectin PO for the treatment of pediculosis is only effective against biting lice, not sucking lice.

    <p>False</p> Signup and view all the answers

    Which of these statements about Dermatophilosis is false?

    <p>It is associated with severe pruritus</p> Signup and view all the answers

    True or False: Papillomas are most common in older horses (> 15 years).

    <p>False</p> Signup and view all the answers

    The treatment for this disorder is surgery, white lotion, and bandaging:

    <p>Exuberant granulation tissue</p> Signup and view all the answers

    What would be your top differential for a horse presenting to your clinic in July for yellow caseous gritty nodules and pruritus on the distal limbs and medial canthus of the eye?

    <p>Habronemiasis</p> Signup and view all the answers

    The gross lesions of habronemiasis and exuberant granulation tissue look very similar. What is the most definitive way to differentiate the two?

    <p>Presence of eosinophils in the impression smear</p> Signup and view all the answers

    The distribution of this mass is at mucocutaneous junctions, especially in unpigmented skin:

    <p>Squamous cell carcinoma</p> Signup and view all the answers

    What would be your top differential for a 18 year old grey colored mare who presents with multiple ~8mm masses under the tail?

    <p>Melanoma</p> Signup and view all the answers

    Which of these statements about nodular necrobiosis is false?

    <p>The distribution is typically along the ventrum and distal limb</p> Signup and view all the answers

    This disorder is caused by Hypoderma lineata and H. bovis, occurs in spring, has a distribution along the dorsum, and is normally seen in horses pastured with cattle. What is it?

    <p>Warbles</p> Signup and view all the answers

    Contact dermatitis is a type ____ hypersensitivity.

    <p>Type 4</p> Signup and view all the answers

    Which of the following is incorrect regarding pemphigus foliaceous in horses?

    <p>Treatment lasts approximately 6 months</p> Signup and view all the answers

    Which of these statements in false regarding vesicular stomatitis in horses?

    <p>Prognosis is poor due to lack of treatment options</p> Signup and view all the answers

    Equine coital exanthema is caused by ______.

    <p>EHV-3</p> Signup and view all the answers

    This disorder is common in draft horses with long feathers, it is distributed along the pasterns, and occurs in damp, filthy environments:

    <p>Scratches</p> Signup and view all the answers

    True or False: Phycomycosis is typically seen in the Gulf Coast states (Louisiana, Texas, Florida)

    <p>True</p> Signup and view all the answers

    Which of these statements is false regarding ulcerative lymphangitis (pigeon fever)?

    <p>It is caused by Corynebacterium ulcerans</p> Signup and view all the answers

    Which of these is not a primary cause of photosensitization in horses?

    <p>Amsinickia (Fiddleneck)</p> Signup and view all the answers

    Which of these statements is false regarding aural plaques?

    <p>Causes severe pruritus</p> Signup and view all the answers

    True or False: The treatment for Arabian Fading Syndrome is copper reduction.

    <p>False</p> Signup and view all the answers

    Which of these clinical signs of Horner's Syndrome is unique to horses?

    <p>Sweating</p> Signup and view all the answers

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