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• Vol.44 No.11
• CLINICA NEUROL, 44: 799−801, 2004
• Vol.44 No.11 contents

The 45th Annual Meeting of the Japanese Society of Neurology

Limbic encephalitis: etiology, pathogenesis, diagnosis and therapy

Takashi Inuzuka, M.D.

Department of Neurology and Geriatrics, Division of Neuroscience, Graduate School of Medicine, Gifu University

Limbic encephalitis affects the mesial temporal lobes and is characterized by subacute onset of memory impairment, personal change, temporal seizures and autonomic nervous disorders. It can occur as viral infections, especially caused by Herpes simplex, paraneoplastic syndrome as a remote effect of cancer, CNS complication of well defined autoimmune diseases. Recently acute reversible limbic encephalitis which probably autoimmune mediated disorders has been reported. Anti-immunotherapy including steroids, plasma exchange and intravenous immunoglobulin often improves this condition and anti-voltage gated potassium channel (VGKC) antibody or anti-glutamate receptor ε2 antibody has been detected in some patients. Establishing the means of early detection of these antibodies as well as other characteristic paraneoplastic antibodies should now be the aim. Detection of neurotropic viral genomes in CSF by PCR is also important for differential diagnosis. As complete recovery of higher cerebral function is generally difficult, immunotherapy and anti-convulsants in addition to vitamin B₁ and acyclovir should be considered in an early stage of disease.

(CLINICA NEUROL, 44: 799−801, 2004)
key words: Herpes virus, paraneoplastic neurological syndrome, autoimmune, anti-glutamate receptor ε2 antibody, anti-voltage gated potassium channel antibody

(Received: 12-May-04)