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Fever of Unknown Origin (Infection (Virus (Hepatitis (Hepatitis A: contact…
Fever of Unknown Origin
Main presentation
11yo indonesian female, 2mth fever w chills/rigors (Tmax = 38.8C)
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Infection
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Virus
CMV: contact hx, pharyngitis, cervical adenopathy
EBV: otitis media, diarrhea, abd complaints, URTI
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Hepatitis
Hepatitis A: contact hx, vomit/nausea, abd pain, jaundice
Hepatitis B: vaccine, travel hx, jaundice, abd pain
enteroviruses: exanthema, CNS involved
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Bacteria
Brucellosis: exposure to animals, unpasteurized milk/cheese hepatosplenomegaly
Cat Scratch Disease (Bartonella henselae): exp to cats, self-limited regional lymphadenopathy
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Salmonellosis: contaminated food, enteric fever, abd pain
Tularemia: contact w infected animals/ticks, red papulo-ulcerative lesion, tender regional lymphadenopathy
GAS - rheumatic fever: erythema marginatum, subcut nodules, sydenham chorea
Parasites
Malaria (plasmodium): Splenomegaly, travel hx
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Inflammatory
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Kikuchi-fujimoto disease: cervical lymphadenopathy, hepatosplenomegaly
Metabolic
Hyperthyroidism: increased sweating, tremors, wgt loss
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Neoplasms
more common
Hematological
Leukemia: bleeding/bruising, lymphadenopathy, bone pain
Lymphoma: lymphadenopathy, mediastinal mass
multiorgan involvement
Hemophagocytic lymphohistiocytosis: hepatoplenomegaly, hyperferritinemia
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