Arcanobacterium haemolyticum: Difference between revisions
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Arcanobacterium haemolyticum
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== Background == |
== Background == |
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| − | * Non-motile beta-hemolytic, [[Stain::Gram-positive]] [[Shape::bacillus]] |
+ | * Non-motile beta-hemolytic, [[Stain::Gram-positive]] [[Shape::curved]] [[Shape::bacillus]] |
| + | * May be [[Stain::Gram-variable]] |
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| + | * Previously known as [[Corynebacterium haemolyticum]] |
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== Clinical Manifestations == |
== Clinical Manifestations == |
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| − | * Most commonly causes [[pharyngitis]], |
+ | * Most commonly causes [[pharyngitis]], particularly in children and young adults |
| + | ** May have diphtheria-like tonsillar exudates |
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| − | * Rash in 25-50%, which may be urticarial, macular, or maculopapular |
+ | ** Rash in 25-50%, which may be urticarial, macular, or maculopapular |
| − | ** Typically on trunk and extremities, and spares the palms, soles, and face |
+ | *** Typically on trunk and extremities, and spares the palms, soles, and face |
| + | * Next most common is [[skin and soft tissue infection]], usually polymicrobial |
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| + | * Also a case-reportable cause of [[meningitis]], [[pneumonia]], [[brain abscess]], [[osteomyelitis]], and [[peritonsillar abscess]] |
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== Management == |
== Management == |
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| + | * Susceptible to most antibiotics, including [[penicillins]], [[cephalosporins]], [[carbapenems]], [[tetracyclines]], [[macrolides]], [[lincosamides]], and [[vancomycin]] |
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| − | * First-line antibiotic is [[Is treated by::erythromycin]] due to increasing [[penicillin]] resistance |
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| + | * Not reliably susceptible to [[co-trimoxazole]] |
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{{DISPLAYTITLE:''Arcanobacterium haemolyticum''}} |
{{DISPLAYTITLE:''Arcanobacterium haemolyticum''}} |
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Latest revision as of 13:07, 13 February 2024
Background
- Non-motile beta-hemolytic, Gram-positive curved bacillus
- May be Gram-variable
- Previously known as Corynebacterium haemolyticum
Clinical Manifestations
- Most commonly causes pharyngitis, particularly in children and young adults
- May have diphtheria-like tonsillar exudates
- Rash in 25-50%, which may be urticarial, macular, or maculopapular
- Typically on trunk and extremities, and spares the palms, soles, and face
- Next most common is skin and soft tissue infection, usually polymicrobial
- Also a case-reportable cause of meningitis, pneumonia, brain abscess, osteomyelitis, and peritonsillar abscess
Management
- Susceptible to most antibiotics, including penicillins, cephalosporins, carbapenems, tetracyclines, macrolides, lincosamides, and vancomycin
- Not reliably susceptible to co-trimoxazole
