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Neuroschistosomiasis.

Allen G Ross1, Donald P McManus, Jeremy Farrar

  • 1School of Public Health, Griffith University, Meadowbrook, QLD, Australia. a.ross@griffith.edu.au

Journal of Neurology
|June 16, 2011
PubMed
Summary
This summary is machine-generated.

Neuroschistosomiasis, a severe outcome of Schistosoma infection, causes neurological damage through egg deposition in the CNS. Diagnosis requires histopathology, and treatment involves antiparasitic drugs, steroids, and sometimes surgery.

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Published on: June 5, 2012

Area of Science:

  • Neurology
  • Infectious Diseases
  • Parasitology

Background:

  • Schistosomiasis (bilharzia) is a neglected tropical disease caused by Schistosoma parasites.
  • Neuroschistosomiasis represents a severe clinical manifestation of schistosome infection.
  • Neurological complications arise from aberrant worm migration and subsequent egg deposition in the central nervous system (CNS).

Purpose of the Study:

  • To elucidate the pathogenesis, clinical manifestations, diagnosis, and treatment of neuroschistosomiasis.
  • To differentiate neurological presentations based on Schistosoma species.
  • To outline diagnostic criteria and therapeutic strategies for managing this severe parasitic CNS infection.

Main Methods:

  • Review of literature on neuroschistosomiasis pathogenesis, clinical features, and treatment modalities.
  • Analysis of histopathological findings in definitive diagnosis.
  • Correlation of clinical symptoms with parasite species and location of CNS involvement.

Main Results:

  • Egg deposition in the CNS triggers a Th2-driven granulomatous reaction, leading to mass effect and neurological deficits.
  • Myelopathy is common in S. mansoni/S. haematobium infections, while encephalitis is typical of S. japonicum.
  • Cerebral symptoms include encephalopathy, seizures, and ataxia; spinal symptoms involve pain, weakness, and bladder dysfunction.

Conclusions:

  • Definitive diagnosis of neuroschistosomiasis relies on histopathological evidence of Schistosoma eggs and granulomas.
  • Treatment involves praziquantel, corticosteroids, and potentially surgery for severe cases or medullary compression.
  • Early diagnosis and appropriate management are crucial for mitigating severe neurological sequelae.