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Fungal meningitis in an immunocompetent patient

Ricardo Louro1, Rui Ferreira, Catarina Pinheiro

  • 1Serviço de Medicina Interna, Centro Hospitalar do Barlavento Algarvio, Portimão, Portugal. louro_scout@hotmail.com

Clinical Drug Investigation
|February 6, 2013
PubMed

Insights

Cryptococcal meningitis, though rare in immunocompetent individuals, can cause severe illness. Early diagnosis and appropriate antifungal treatment are crucial for better outcomes in these challenging cases.

Area of Science:

  • Infectious Diseases
  • Neurology
  • Mycology

Background:

  • Cryptococcal meningitis is uncommon in immunocompetent hosts, often presenting subtly with headache and altered mental status.
  • Despite a normal immune system, cryptococcal infections in these individuals are associated with high morbidity and mortality.
  • Delayed diagnosis and suboptimal initial therapy contribute to poor outcomes.

Observation:

  • A 59-year-old immunocompetent male presented with a 2-week history of headache, nausea, and sensory deficits.
  • Initial brain MRI was normal, but lumbar puncture revealed *Cryptococcus neoformans*, var. grubii in cerebrospinal fluid.
  • The patient experienced visual and hearing deficits upon admission.

Findings:

  • Treatment involved 28 weeks of liposomal amphotericin B and fluconazole.
  • At 1-year follow-up, the patient was asymptomatic and on prophylactic fluconazole.
  • Molecular techniques confirmed the identification of *Cryptococcus neoformans*, var. grubii.

Implications:

  • This case highlights the importance of considering cryptococcal meningitis even in immunocompetent patients with non-specific neurological symptoms.
  • Prompt diagnosis via lumbar puncture and appropriate, prolonged antifungal therapy are essential for successful management.
  • Further research is needed to understand the role of the host's immune response in cryptococcal infections.

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