The Significance of Ectoparasites in Clinical Settings

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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?

Fleas Signup and view all the answers

Which ectoparasite can transfer Dipylidium caninum to dogs?

Fleas Signup and view all the answers

Which ectoparasite is a vector for leishmaniasis?

Sandflies Signup and view all the answers

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

Psoroptes ovis Signup and view all the answers

What can ectoparasites indicate in a host?

Underlying immunocompromise Signup and view all the answers

What is the clinical sign commonly associated with ectoparasites?

Pruritus Signup and view all the answers

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

Caudal/dorsal part of the body Signup and view all the answers

Which mite is associated with otitis in dogs and cats?

Otodectes Signup and view all the answers

Which mite causes truncal scale and is zoonotic in rabbits?

Cheyletiella Signup and view all the answers

Which mite is associated with sarcoptic mange in dogs?

Sarcoptes scabiei Signup and view all the answers

Which animal is most likely to be affected by Trixacarus?

Guinea pig Signup and view all the answers

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

Midges Signup and view all the answers

Which parasite causes 'sweet itch' in horses?

Culicoides spp Signup and view all the answers

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

Dermanyssus gallinae Signup and view all the answers

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

All of the above Signup and view all the answers

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

Undertake appropriate test Signup and view all the answers

What should be recognized when undertaking appropriate tests?

The limitations of the tests Signup and view all the answers

What is the purpose of recognizing limitations of tests?

To select the most appropriate test Signup and view all the answers

What are the four cutaneous reaction patterns of cats?

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

Which ectoparasite is associated with chorioptic mange in horses?

Chorioptes equi Signup and view all the answers

Which ectoparasite causes truncal scale and is zoonotic in rabbits?

Cheyletiella (fur mite) Signup and view all the answers

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

Culicoides (midge) Signup and view all the answers

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

Otodectes Signup and view all the answers

What are the clinical importance of ectoparasites?

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 Signup and view all the answers

What are the zoonotic importance of ectoparasites?

Fleas, Sarcoptes, Cheyletiella Signup and view all the answers

What are the economic importance of ectoparasites?

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

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

Prevalence of disease and severity of effect Signup and view all the answers

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

Fleas Signup and view all the answers

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

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

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

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

Why is it important to recognize the limitations of tests?

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

What is the role of trial treatment in certain situations?

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

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

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). Signup and view all the answers

The Significance of Ectoparasites in Clinical Settings

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Questions and Answers

Which of the following is a clinical importance of ectoparasites?

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

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

Which ectoparasite is known to cause pruritus and cutaneous myiasis?

Which ectoparasite can transfer Dipylidium caninum to dogs?

Which ectoparasite is a vector for leishmaniasis?

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

What can ectoparasites indicate in a host?

What is the clinical sign commonly associated with ectoparasites?

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

Which mite is associated with otitis in dogs and cats?

Which mite causes truncal scale and is zoonotic in rabbits?

Which mite is associated with sarcoptic mange in dogs?

Which animal is most likely to be affected by Trixacarus?

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

Which parasite causes 'sweet itch' in horses?

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

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

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

What should be recognized when undertaking appropriate tests?

What is the purpose of recognizing limitations of tests?

What are the four cutaneous reaction patterns of cats?

Which ectoparasite is associated with chorioptic mange in horses?

Which ectoparasite causes truncal scale and is zoonotic in rabbits?

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

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

What are the clinical importance of ectoparasites?

What are the zoonotic importance of ectoparasites?

What are the economic importance of ectoparasites?

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

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

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

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

Why is it important to recognize the limitations of tests?

What is the role of trial treatment in certain situations?

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

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