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"Thalamic" dementia in herpes encephalitis: clinico-pathological report
Acta Neuropathologica. Supplementum
|January 1, 1981
Summary
Herpes zoster (HZ) can rarely cause primary central nervous system (CNS) affections, leading to a unique dementia. This case highlights a rare thalamic encephalitis linked to ophthalmic HZ.
Area of Science:
- Neurology
- Infectious Diseases
- Neurovirology
Background:
- Primary central nervous system (CNS) affections due to Herpes zoster (HZ) are uncommon.
- Reported cases often involve ascending myelitis.
Observation:
- A 37-year-old male developed apathy and iridocyclitis, followed by ophthalmic HZ six months later.
- The patient subsequently presented with dementia, Korsakow's syndrome, apathy, hemipalsy, and diplopia.
- Neuropathological examination revealed a progressive encephalitis with symmetrical thalamic lesions.
Findings:
- The study discusses the Herpes zoster etiology of the observed CNS lesions.
- The specific thalamic localization is correlated with the patient's unique dementia profile.
- Symmetrical lesion distribution and microscopic features suggest a potential vasculitis component.
Implications:
- This case underscores the rare but severe neurological complications of Herpes zoster.
- It emphasizes the importance of considering HZ in the differential diagnosis of unexplained encephalitis and dementia.
- The findings contribute to understanding the neuropathogenesis of HZ-related CNS disease and potential vasculitic mechanisms.