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Cryptococcal meningitis with secondary cutaneous involvement in an immunocompetent host
Saadia Tabassum1, Atiya Rahman, Fivzia Herekar
1Aga Khan University and Hospital, Karachi, Pakistan. saadia.tabassum@aku.edu.
Abstract:
Cryptococcosis is a potentially fatal fungal disease caused by variants of Cryptococcus neoformans species. The respiratory tract is the usual portal of entry, with a peculiar predilection to invade the central nervous system. The skin can be secondarily involved in disseminated infection or be exceptionally involved as primary cutaneous infection by inoculation. The disease is mostly seen in immunodeficiency states. The diagnosis is frequently unsuspected in immunocompetent patients. We report a case of disseminated cryptococcal meningitis in an immunocompetent young adult. The cutaneous eruption prompted the accurate diagnosis. The patient, a 20-year-old female, had fever, cough, headache and intractable vomiting for the past two months and was being managed as a case of tuberculous meningitis. Two weeks after starting antituberculous treatment she developed umbilicated papules on the head and neck region. Necessary laboratory workup identified C. neoformans in cerebrospinal fluid (CSF) and skin specimens. The titers of cryptococcal antigen were measured in CSF and serum for diagnostic and prognostic purposes. Anti-fungal treatment resulted in regression of the cutaneous lesions and resolution of systemic complaints. The case highlights the need for high degree of suspicion, especially in healthy young adults, in the diagnosis of cryptococcosis. The cutaneous eruptions can be the first manifestation or a diagnostic clue of enormous significance.
Insights
Cryptococcosis, a serious fungal infection, can affect immunocompetent individuals. Skin rashes may signal disseminated cryptococcal meningitis, aiding early diagnosis in young adults.
Area of Science:
- Infectious Diseases
- Mycology
- Neurology
Background:
- Cryptococcosis is a fungal infection caused by Cryptococcus neoformans, typically entering through the respiratory tract and often affecting the central nervous system.
- While commonly associated with immunodeficiency, cryptococcosis can occur in immunocompetent individuals, sometimes presenting with atypical symptoms.
- Diagnosis in immunocompetent patients can be challenging due to its rarity and often unsuspected presentation.
Observation:
- A young, immunocompetent female presented with symptoms mimicking tuberculous meningitis, including fever, cough, headache, and vomiting.
- The patient developed a distinctive cutaneous eruption of umbilicated papules on the head and neck after two months of illness.
- Identification of Cryptococcus neoformans in cerebrospinal fluid and skin biopsies confirmed disseminated cryptococcal meningitis.
Findings:
- The patient's cerebrospinal fluid and serum cryptococcal antigen titers were measured for diagnostic and prognostic evaluation.
- Antifungal treatment led to the resolution of cutaneous lesions and improvement of systemic symptoms.
- The case underscores the diagnostic significance of cutaneous manifestations in cryptococcosis.
Implications:
- Highlights the importance of considering cryptococcosis in the differential diagnosis of meningitis, even in immunocompetent young adults.
- Emphasizes that cutaneous eruptions can serve as a crucial early diagnostic clue for disseminated fungal infections.
- Suggests that increased clinical suspicion and prompt dermatological examination can improve outcomes for cryptococcosis patients.
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