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

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

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

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

<p>20-45 years (B)</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 (C)</p> Signup and view all the answers

What is the causative agent of syphilis?

<p>Treponema pallidum (D)</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 (B)</p> Signup and view all the answers

What is the most rapid method for visualizing Treponema pallidum?

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

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

<p>Anogenital region (C)</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 (A)</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. (B)</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% (C)</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. (A)</p> Signup and view all the answers

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

<p>10-15% (C)</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. (B)</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% (D)</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 (C)</p> Signup and view all the answers

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

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

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

<p>The lesions regress without treatment (D)</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 (A)</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 (D)</p> Signup and view all the answers

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

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

What causes the maculopapular rash in infectious mononucleosis?

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

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

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

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

<p>Young children (A)</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% (B)</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 (C)</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. (C)</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 (C)</p> Signup and view all the answers

Which region can exhibit condyloma lata lesions in secondary syphilis?

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

What is the causative organism of syphilis?

<p>Spirochete <strong>Treponema pallidum</strong> (C)</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 (A)</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 (A)</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 (B)</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 (B)</p> Signup and view all the answers

Which organism causes Rocky Mountain spotted fever?

<p>Rickettsia rickettsii (D)</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 (C)</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 (C)</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 (D)</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 (D)</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 (A)</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 (D)</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 (A)</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 (B)</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 (D)</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 (A)</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 (B)</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) (A)</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 (A)</p> Signup and view all the answers

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

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

What is the characteristic rash seen in RMSF?

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

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

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

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