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Chronic amebic meningoencephalitis
Abstract:
A patient had a five-year history of sleep disturbance that culminated in a confusional illness with convulsions from which he made a partial recovery. On three separate occasions, the same ameba (Hartmannella rhysodes) was seen in and cultured from the patient's CSF. There was a rising serum titer of immobilizing antibody against the isolated strain of the ameba. The diagnosis of chronic amebic meningoencephalitis was considered in this patient.
Insights
A patient experienced a confusional illness with convulsions, later diagnosed as chronic amebic meningoencephalitis. Repeatedly, Hartmannella rhysodes was identified in cerebrospinal fluid (CSF), confirming the rare parasitic brain infection.
Area of Science:
- Neurology
- Infectious Diseases
- Parasitology
Background:
- A five-year history of sleep disturbance preceded a severe neurological event.
- The patient presented with a confusional illness and convulsions, indicating significant central nervous system involvement.
Purpose of the Study:
- To report a case of suspected chronic amebic meningoencephalitis.
- To identify the causative agent and diagnostic markers for the neurological condition.
Main Methods:
- Cerebrospinal fluid (CSF) analysis including microscopy and culture.
- Serological testing for antibodies against isolated amebic strains.
Main Results:
- The ameba Hartmannella rhysodes was repeatedly identified and cultured from the patient's CSF.
- A rising serum titer of immobilizing antibodies against the isolated H. rhysodes strain was observed.
Conclusions:
- The findings strongly suggest a diagnosis of chronic amebic meningoencephalitis caused by Hartmannella rhysodes.
- This case highlights the importance of considering rare parasitic infections in patients with unexplained neurological disorders.