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Published on: November 29, 2024
Encephalopathy with retinitis due to cat-scratch disease
R A Smith1, B Scott, D W Beverley
1Department of Paediatrics, York Hospital, York, UK. robert.a.smith@york.nhs.uk
Abstract:
Cat-scratch disease is one of several diseases known to be caused by Bartonella species. Some infections due to Bartonella resolve spontaneously without treatment with antibiotics, but in other cases the disease can be fatal without treatment. This case study reports a 7-year-old male who presented with an unexplained encephalopathy and unusual retinal findings associated with evidence supporting infection by B. henselae. The 7-year-old male presented with a 2-week history of general malaise and cervical lymphadenopathy progressing onto fever, headache, vomiting, and confusion associated with meningism. Lumbar puncture revealed a raised cerebrospinal fluid protein, low glucose, and raised white cell count. Abnormal retinal findings and raised antibodies titres to B. quintana indicated a diagnosis of cat-scratch disease. He was treated with azithromycin orally for 3 weeks and made a complete recovery.
Insights
Cat-scratch disease, caused by Bartonella henselae, can lead to severe neurological issues like encephalopathy. Early diagnosis and azithromycin treatment led to a full recovery in a pediatric case.
Area of Science:
- Infectious Diseases
- Neurology
- Ophthalmology
Background:
- Cat-scratch disease is caused by Bartonella henselae, a bacterium.
- While some Bartonella infections resolve spontaneously, others can be fatal without antibiotic treatment.
Observation:
- A 7-year-old male presented with a 2-week history of malaise and cervical lymphadenopathy.
- Symptoms progressed to fever, headache, vomiting, confusion, and meningism.
- Unusual retinal findings and evidence of Bartonella henselae infection were noted.
Findings:
- Lumbar puncture showed elevated cerebrospinal fluid protein, low glucose, and increased white blood cells.
- Antibody titers to Bartonella quintana supported the diagnosis of cat-scratch disease.
- The patient exhibited unexplained encephalopathy and atypical retinal findings.
Implications:
- This case highlights the potential for Bartonella henselae to cause severe neurological complications in children.
- Prompt diagnosis and treatment with azithromycin are crucial for favorable outcomes.
- Ophthalmological examination is important in diagnosing atypical presentations of cat-scratch disease.
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