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Zorluk: OrtaPediatric Infectious Diseases

Match each classic clinical presentation in a pediatric patient with its most likely causative pathogen.

  • Fever, headache, and a petechial rash beginning on the wrists and anklesRickettsia rickettsii
  • Fever, regional lymphadenitis, and a small papule at the site of a feline scratchBartonella henselae
  • Fever, malaise, and an expanding erythematous annular lesion with central clearingBorrelia burgdorferi
  • High fever, an ulcerated skin lesion at a tick bite site, and painful regional lymphadenopathyFrancisella tularensis

Cevap

The presentations map to Rickettsia rickettsii (petechial rash on extremities), Bartonella henselae (papule/lymphadenitis after cat scratch), Borrelia burgdorferi (erythema migrans), and Francisella tularensis (ulceroglandular presentation).
Each pathogen has a distinct, classic clinical presentation in pediatric patients. Recognizing the specific cutaneous findings (such as erythema migrans or a petechial rash) and exposure history (such as tick bites or cat scratches) is key to diagnosing these zoonotic illnesses accurately.

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1
Analyze the first clinical presentation: petechial rash on extremities moving centrally.
Identified as classic Rocky Mountain spotted fever.
This specific centrifugal rash progression is a hallmark of Rickettsia rickettsii infection.
2
Analyze the second presentation: papule after a feline scratch with regional lymphadenopathy.
Identified as cat scratch disease.
Bartonella henselae is transmitted by cat scratches and typically causes localized lymphadenitis.
3
Analyze the third presentation: annular lesion with central clearing.
Identified as erythema migrans, characteristic of Lyme disease.
Borrelia burgdorferi infection initially presents with this classic expanding 'bulls-eye' rash.
4
Analyze the fourth presentation: ulcerated lesion with painful regional lymphadenopathy.
Identified as ulceroglandular tularemia.
Francisella tularensis typically causes an ulcer at the inoculation site and prominent, tender regional lymph nodes.

Anahtar Kavram

Zoonotic and Tick-Borne Infections in Pediatrics
Tahmini Süre:1m 0s
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Konular

Pediatric Infectious Diseases

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