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Frontal allographic agraphia in a patient with behavioral variant frontotemporal dementia.
- Source :
-
Neurocase [Neurocase] 2024 Feb; Vol. 30 (1), pp. 32-38. Date of Electronic Publication: 2024 May 16. - Publication Year :
- 2024
-
Abstract
- We report a patient with behavioral variant frontotemporal dementia who developed agraphia, irritability, perseverative and stereotyped behavior, and dietary changes. MRI revealed bilateral frontal convexity atrophy. Neuropsychological examination showed fluent aphasia with perseverative allographic agraphia, mild semantic impairment, and dysexecutive syndrome. Allographic agraphia featured unidirectional conversion from hiragana (cursive form of Japanese phonograms) and kanji (Japanese morphograms) to katakana (square form of Japanese phonograms), as opposed to mutual (bidirectional) conversion between hiragana and katakana in parieto-occipital gyri lesions. Furthermore, all letters of the word were converted and this whole-word conversion may be characteristic of perseverative behavior in frontotemporal dementia.
- Subjects :
- Humans
Male
Magnetic Resonance Imaging
Middle Aged
Neuropsychological Tests
Frontal Lobe diagnostic imaging
Frontal Lobe pathology
Atrophy pathology
Frontotemporal Dementia pathology
Frontotemporal Dementia diagnostic imaging
Frontotemporal Dementia physiopathology
Frontotemporal Dementia complications
Agraphia etiology
Agraphia physiopathology
Subjects
Details
- Language :
- English
- ISSN :
- 1465-3656
- Volume :
- 30
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Neurocase
- Publication Type :
- Academic Journal
- Accession number :
- 38752838
- Full Text :
- https://doi.org/10.1080/13554794.2024.2353936