Cat-scratch disease
Background
- Caused by Bartonella henselae
Clinical Features
- Cat (normally kitten) exposure
- Lymphadenitis proximal to exposure
- Parinaud's oculoglandular syndrome-conjunctivitis, granuloma, periauricular adenopathy
- From direct inoculation of the eye
Differential Diagnosis
Workup
- IFA serology
Management
- Immunocompetent
- Adult (>45kg): Azithromycin 500mg PO x1, then 250mg/day x 4 days[1]
- Child (<45kg): Azithromycin 10mg/kg x1, then 5 mg/kg per day x 4 days[2]
Disposition
Prognosis
- Approximately 10% of nodes suppurate