The Significance of Ectoparasites in Clinical Settings
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Questions and Answers

Which of the following is a clinical importance of ectoparasites?

  • Ectoparasites can cause internal organ damage in the host
  • Parasites can cause secondary bacterial skin infections (correct)
  • Ectoparasites can cause allergies in the host
  • Ectoparasites can cause neurological disorders in the host

Which of the following is an example of a zoonotic importance of ectoparasites?

  • Ticks transfer babesiosis to cattle and dogs
  • Fleas cause allergic reactions in humans
  • Sandflies cause leishmaniasis in humans
  • All of the above (correct)

Which of the following is a common ectoparasite found on the skin surface of hosts?

  • Fleas (correct)
  • Mosquitoes
  • Lice
  • Ticks

Which ectoparasite is known to cause pruritus and cutaneous myiasis?

<p>Fleas (A)</p> Signup and view all the answers

Which ectoparasite can transfer Dipylidium caninum to dogs?

<p>Fleas (B)</p> Signup and view all the answers

Which ectoparasite is a vector for leishmaniasis?

<p>Sandflies (B)</p> Signup and view all the answers

Which ectoparasite is responsible for sheep scab, causing significant economic loss?

<p>Psoroptes ovis (D)</p> Signup and view all the answers

What can ectoparasites indicate in a host?

<p>Underlying immunocompromise (D)</p> Signup and view all the answers

What is the clinical sign commonly associated with ectoparasites?

<p>Pruritus (D)</p> Signup and view all the answers

Which part of the body is most commonly affected by lesions in dogs with pruritus?

<p>Caudal/dorsal part of the body (A)</p> Signup and view all the answers

Which mite is associated with otitis in dogs and cats?

<p>Otodectes (A)</p> Signup and view all the answers

Which mite causes truncal scale and is zoonotic in rabbits?

<p>Cheyletiella (A)</p> Signup and view all the answers

Which mite is associated with sarcoptic mange in dogs?

<p>Sarcoptes scabiei (B)</p> Signup and view all the answers

Which animal is most likely to be affected by Trixacarus?

<p>Guinea pig (D)</p> Signup and view all the answers

Which parasite is a vector of bluetongue virus in cattle and sheep?

<p>Midges (B)</p> Signup and view all the answers

Which parasite causes 'sweet itch' in horses?

<p>Culicoides spp (C)</p> Signup and view all the answers

Which parasite is commonly found in chicken houses and only feeds at night?

<p>Dermanyssus gallinae (C)</p> Signup and view all the answers

When making a presumptive diagnosis, what factors should be considered?

<p>All of the above (D)</p> Signup and view all the answers

What should be done after drawing up a list of potential causal ectoparasites?

<p>Undertake appropriate test (A)</p> Signup and view all the answers

What should be recognized when undertaking appropriate tests?

<p>The limitations of the tests (B)</p> Signup and view all the answers

What is the purpose of recognizing limitations of tests?

<p>To select the most appropriate test (C)</p> Signup and view all the answers

What are the four cutaneous reaction patterns of cats?

<p>Head and neck pruritus, Symmetrical alopecia, Eosinophilic granuloma complex (EGC), Miliary dermatitis</p> Signup and view all the answers

Which ectoparasite is associated with chorioptic mange in horses?

<p>Chorioptes equi</p> Signup and view all the answers

Which ectoparasite causes truncal scale and is zoonotic in rabbits?

<p>Cheyletiella (fur mite)</p> Signup and view all the answers

What is the vector of bluetongue virus in cattle and sheep?

<p>Culicoides (midge)</p> Signup and view all the answers

What is the scientific name for the mite that causes otitis in dogs and cats?

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

What are the clinical importance of ectoparasites?

<p>Directly impact welfare of host, predispose to/cause other disease in host, act as vectors of disease, clinical signs mimic other disease, act as pointers to other disease</p> Signup and view all the answers

What are the zoonotic importance of ectoparasites?

<p>Fleas, Sarcoptes, Cheyletiella</p> Signup and view all the answers

What are the economic importance of ectoparasites?

<p>Psoroptes ovis (sheep scab) – cause of significant economic loss (notifiable disease in Scotland)</p> Signup and view all the answers

What factors can influence the 'importance' of a parasitic condition?

<p>Prevalence of disease and severity of effect</p> Signup and view all the answers

What are some common ectoparasites found on the skin surface of hosts?

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

What are the diagnostic steps that should be undertaken for each potential causal ectoparasite?

<p>The appropriate diagnostic steps for each potential causal ectoparasite should be undertaken based on knowledge of parasite biology.</p> Signup and view all the answers

What factors should be considered when making a presumptive diagnosis based on history, observation, and clinical presentation?

<p>The species, age, husbandry, nature/distribution of lesions, and evidence of zoonosis should be considered when making a presumptive diagnosis.</p> Signup and view all the answers

Why is it important to recognize the limitations of tests?

<p>Recognizing the limitations of tests is important because it helps to understand the potential shortcomings and reliability of the diagnostic methods being used.</p> Signup and view all the answers

What is the role of trial treatment in certain situations?

<p>In certain situations, trial treatment can play a role in helping to confirm or rule out a parasitic infection.</p> Signup and view all the answers

If a parasite is not likely to be on the animal, where should it be looked for?

<p>If a parasite is not likely to be on the animal, it should be looked for in the environment, such as in the case of poultry red mite (Dermanyssus).</p> Signup and view all the answers

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