Infectious Mononucleosis and Syphilis Quiz
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Questions and Answers

What is the typical timeframe for the development of secondary syphilis in adults after the appearance of the primary chancre?

  • 6-8 weeks (correct)
  • 2-4 weeks
  • 4-6 weeks
  • 8-10 weeks

    • What is the characteristic rash associated with secondary syphilis?

  • Purpuric rash on the extremities
  • Papular rash limited to the trunk
  • Erythematous maculopapular rash over the entire body (correct)
  • Vesicular rash on the palms and soles

    • What is the fate of the secondary syphilis lesions without treatment?

  • The lesions gradually worsen over time
  • The lesions remain stable without treatment
  • The lesions persist indefinitely
  • The lesions regress without treatment (correct)

    • Which of the following is not a common symptom of secondary syphilis?

    <p>Rash limited to the palms and soles</p> Signup and view all the answers

    What is the histologic hallmark of the primary chancre in syphilis?

    <p>Endarteritis and periarteritis</p> Signup and view all the answers

    What is the most common age range for the development of secondary syphilis?

    <p>20-45 years</p> Signup and view all the answers

    Which stage of syphilis is characterized by maculopapular lesions that cover most of the body?

    <p>Secondary syphilis</p> Signup and view all the answers

    What is the causative agent of syphilis?

    <p>Treponema pallidum</p> Signup and view all the answers

    Why is Treponema pallidum not observable through conventional light microscopy?

    <p>It is too thin to be stained</p> Signup and view all the answers

    What is the most rapid method for visualizing Treponema pallidum?

    <p>Darkfield microscopy</p> Signup and view all the answers

    Which region of the body can exhibit condyloma lata in secondary syphilis?

    <p>Anogenital region</p> Signup and view all the answers

    How do the lesions in secondary syphilis differ from childhood exanthems and infectious mononucleosis?

    <p>They also occur on the palms and soles</p> Signup and view all the answers

    Which of the following statements about the maculopapular rash in infectious mononucleosis is correct?

    <p>It is faint, widely scattered, and erythematous.</p> Signup and view all the answers

    What percentage of patients with infectious mononucleosis typically develop petechiae on the hard and soft palates?

    <p>25-60%</p> Signup and view all the answers

    Which of the following statements regarding the maculopapular rash in infectious mononucleosis is true?

    <p>It is more common in young children than in young adults.</p> Signup and view all the answers

    What percentage of patients with infectious mononucleosis develop a maculopapular rash?

    <p>10-15%</p> Signup and view all the answers

    Which of the following statements about infectious mononucleosis is correct?

    <p>It is caused by the Epstein-Barr virus (EBV), which infects B lymphocytes.</p> Signup and view all the answers

    What percentage of patients with EBV mononucleosis treated with amoxicillin or ampicillin develop a maculopapular rash?

    <p>About 80%</p> Signup and view all the answers

    What is the characteristic rash associated with secondary syphilis?

    <p>Erythematous maculopapular rash over the entire body, including the palms and soles</p> Signup and view all the answers

    Which region of the body can exhibit condyloma lata in secondary syphilis?

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

    What is the fate of the secondary syphilis lesions without treatment?

    <p>The lesions regress without treatment</p> Signup and view all the answers

    How do the lesions in secondary syphilis differ from those in infectious mononucleosis?

    <p>Secondary syphilis has a generalized maculopapular rash, while infectious mononucleosis has a petechial rash</p> Signup and view all the answers

    What is the most common age range for the development of secondary syphilis?

    <p>20-45 years old</p> Signup and view all the answers

    What is the histologic hallmark of the primary chancre in syphilis?

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

    What causes the maculopapular rash in infectious mononucleosis?

    <p>Epstein-Barr virus (EBV)</p> Signup and view all the answers

    What percentage of patients with infectious mononucleosis typically develop a maculopapular rash?

    <p>10-15%</p> Signup and view all the answers

    In which age group is the maculopapular rash more common in infectious mononucleosis?

    <p>Young children</p> Signup and view all the answers

    What percentage of patients with EBV mononucleosis treated with amoxicillin or ampicillin develop a maculopapular rash?

    <p>80%</p> Signup and view all the answers

    What is the characteristic appearance of the maculopapular rash in infectious mononucleosis?

    <p>Faint, widely scattered, and erythematous</p> Signup and view all the answers

    Which statement about the epidemiology of infectious mononucleosis is correct?

    <p>EBV is found worldwide and is common and relatively mild in children.</p> Signup and view all the answers

    Which of the following best describes the characteristic maculopapular lesions in secondary syphilis?

    <p>They involve the palms and soles, unlike childhood exanthems</p> Signup and view all the answers

    Which region can exhibit condyloma lata lesions in secondary syphilis?

    <p>Anogenital region and oral/nasal mucosa</p> Signup and view all the answers

    What is the causative organism of syphilis?

    <p>Spirochete <strong>Treponema pallidum</strong></p> Signup and view all the answers

    Why is darkfield microscopy useful for visualizing Treponema pallidum?

    <p>T. pallidum is too thin to be stained and observed with conventional light microscopy</p> Signup and view all the answers

    Which stage of syphilis is characterized by widespread maculopapular lesions covering most of the body?

    <p>Secondary syphilis</p> Signup and view all the answers

    How do the lesions in secondary syphilis differ from those in childhood exanthems and infectious mononucleosis?

    <p>They can involve the palms and soles</p> Signup and view all the answers

    What is the most common rickettsial tick-borne infection in the United States?

    <p>Rocky Mountain spotted fever</p> Signup and view all the answers

    Which organism causes Rocky Mountain spotted fever?

    <p>Rickettsia rickettsii</p> Signup and view all the answers

    What is a unique manifestation of Rocky Mountain spotted fever?

    <p>The rash begins as erythematous macules on the wrists and ankles</p> Signup and view all the answers

    What is the typical timeframe for the development of symptoms after a tick bite in Rocky Mountain spotted fever?

    <p>5-10 days</p> Signup and view all the answers

    What can be a consequence of damage to the blood vessels in Rocky Mountain spotted fever?

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

    What is the most common symptom that occurs in the majority of Rocky Mountain spotted fever patients?

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

    What is the most common cause of Toxic Shock Syndrome (TSS)?

    <p>S. aureus strains producing superantigen TSS toxin-1 (TSST-1) or enterotoxins</p> Signup and view all the answers

    Which of the following is a key characteristic of Staphylococcal TSS?

    <p>Staphylococcal TSS is an acute-onset illness characterized by fever, hypotension, and rash</p> Signup and view all the answers

    What is the primary reason for the prompt removal of attached ticks to prevent the transmission of Rocky Mountain Spotted Fever (RMSF)?

    <p>It takes several hours for an attached tick to transmit the RMSF bacterium</p> Signup and view all the answers

    Which of the following is a key characteristic of Streptococcal Toxic Shock Syndrome (TSS)?

    <p>A diffuse scarlatina-like erythema is seen in about 10% of patients</p> Signup and view all the answers

    Which of the following is a risk factor for developing Toxic Shock Syndrome (TSS)?

    <p>People of any age can be affected, and many do not have any predisposing conditions</p> Signup and view all the answers

    Which of the following is a key distinguishing feature of the rash in Staphylococcal Toxic Shock Syndrome (TSS) compared to other infectious diseases?

    <p>Desquamation, especially on the palms and soles, is frequently seen in survivors</p> Signup and view all the answers

    What is the primary cause of pathology in Rocky Mountain Spotted Fever (RMSF)?

    <p>Increased vascular permeability leading to edema and hypovolemia</p> Signup and view all the answers

    Which of the following is NOT a common laboratory finding suggestive of RMSF?

    <p>Hypernatremia (increased sodium levels)</p> Signup and view all the answers

    What is the recommended treatment for RMSF if there is a suspicion of the disease?

    <p>Initiate treatment with doxycycline immediately</p> Signup and view all the answers

    Which of the following is a method used for diagnosing RMSF?

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

    What is the characteristic rash seen in RMSF?

    <p>Petechial rash</p> Signup and view all the answers

    Which of the following is an important method of preventing RMSF?

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

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