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Toxoplasmic encephalitis in acquired immunodeficiency syndrome
The Journal of the Association of Physicians of India
|April 25, 2000
Summary
Toxoplasmic encephalitis (TE) is a common opportunistic infection in patients with acquired immunodeficiency syndrome (AIDS). Early diagnosis and treatment with trimethoprim/sulfamethoxazole and pyrimethamine lead to significant clinical improvement and prevent relapse.
Area of Science:
- Infectious Diseases
- Neurology
- Immunology
Background:
- Toxoplasmic encephalitis (TE) is a frequent opportunistic central nervous system infection in individuals with acquired immunodeficiency syndrome (AIDS).
- Neurological abnormalities are common in advanced HIV infection, necessitating accurate diagnosis and effective treatment.
Purpose of the Study:
- To investigate the clinical presentation, diagnostic findings, and treatment outcomes of toxoplasmic encephalitis in patients with AIDS.
- To evaluate the efficacy of a combination therapy for TE in this patient population.
Main Methods:
- Retrospective analysis of 11 patients with HIV and neurological symptoms suggestive of TE.
- Treatment with a combination of trimethoprim/sulfamethoxazole and pyrimethamine.
- Assessment of treatment response through clinical evaluation and neuroimaging (CT/MRI) after three weeks.
Main Results:
- Common symptoms included fever, seizures, headache, and altered sensorium, with focal neurological deficits in 80%.
- Characteristic ring-enhancing lesions were observed on CT/MRI scans.
- Ten out of eleven patients showed clinical and radiological improvement within 10 days of treatment; one patient died early.
Conclusions:
- Toxoplasmic encephalitis is a significant opportunistic infection in AIDS patients, often presenting with focal neurological deficits and characteristic imaging findings.
- Empirical treatment with trimethoprim/sulfamethoxazole and pyrimethamine is effective in confirming the diagnosis and managing TE.
- Lifelong prophylactic therapy is crucial to prevent relapses of this potentially fatal but treatable condition.
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