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Part VIII. Ectoparasites
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Your patient is a homeless person with several papules on his hands that are very pruritic. One lesion is a linear track. You suspect the patient may have scabies. Which one of the following is most likely to be seen?
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(A) Nits are seen attached to hair.
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(B) Visual inspection reveals a larva in the lesions.
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(C) The nymph form of a tick is seen in the lesions.
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(D) Examination of a skin scraping in the microscope reveals a mite.
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Regarding the patient in Question 1, which one of the following is the best drug to treat the infection?
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Your patient has recently returned from a trip to Central America that included a 2-week trek in the tropical rainforest. She now has a raised erythematous lesion on her leg that is quite painful. A 7-day course of cephalexin has had no effect. Which one of the following is the most likely cause?
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Regarding pediculosis, which one of the following is most accurate?
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(A) Nits are the eggs of the louse and are typically found attached to the hair shaft.
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(B) Praziquantel is the drug of choice for pediculosis caused by both Pediculus and Phthirus.
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(C) To visualize the organism, a skin sample should be examined using the 10× objective in a light microscope.
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(D) The lesions caused by the body louse are pruritic, but the lesions caused by the pubic louse form a painful necrotic black eschar.