Persisting Childish Behavior after Bilateral Thalamic Infarcts (original) (raw)
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Case Reports| February 14 2008
aDepartment of Neurology, Miyagi National Hospital, Miyagi,
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bSection of Neuropsychology, Division of Disability Science, Tohoku University Graduate School of Medicine, Sendai,
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bSection of Neuropsychology, Division of Disability Science, Tohoku University Graduate School of Medicine, Sendai,
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aDepartment of Neurology, Miyagi National Hospital, Miyagi,
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cDepartment of Neurosurgery, Sendai National Hospital, Miyagi, Japan
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Eur Neurol (1997) 37 (4): 230–235.
Received:
February 06 1996
Accepted:
October 29 1996
Published Online:
February 14 2008
Abstract
We report a case with bilateral paramedian thalamic infarcts. The patient showed a dramatic personality change characterized by childish behavior and euphoria, which remained unchanged for 2 years after the onset. ‘Vorbeireden’ characterized by approximate answers was also observed. Anterograde amnesia had quite improved after 2 years, while retrograde amnesia for 1 year prior to the stroke onset and vertical gaze palsy remained unchanged. An MRI scan demonstrated bilateral medial thalamic and right midbrain infarcts without other lesions in the brain. A positron emission tomography study showed that cerebral metabolic rate for glucose was markedly decreased in both thalami and in the cerebellum, and only slightly decreased in the parietal and occipital cortical regions. Cerebral metabolic rates of glucose in the frontal and temporal cortices were within normal range. The paramedian thalamic lesions per se may be responsible for the patient’s personality change, ‘Vorbeireden’, and amnesia.
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© 1997 S. Karger AG, Basel
1997
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