Frontal allographic agraphia in a patient with behavioral variant frontotemporal dementia.

IF 0.6 4区 医学 Q4 CLINICAL NEUROLOGY
Neurocase Pub Date : 2024-02-01 Epub Date: 2024-05-16 DOI:10.1080/13554794.2024.2353936
Yasuhisa Sakurai, Masashi Hamada, Hiroshi Takuma
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引用次数: 0

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.

一名行为变异型额颞叶痴呆症患者的额叶异形书写障碍。
我们报告了一名行为变异型额颞叶痴呆症患者,该患者出现了书写障碍、易激惹、固执和刻板行为,以及饮食改变。核磁共振成像显示患者双侧额凸部萎缩。神经心理学检查显示,患者有流利性失语症,伴有顽固性异位性书写障碍、轻度语义障碍和执行障碍综合征。异形失读症的特点是从平假名(日语拼音的草书形式)和汉字(日语形声字)到片假名(日语拼音的方块形式)的单向转换,而不是顶枕叶回病变中平假名和片假名之间的相互(双向)转换。此外,单词的所有字母都进行了转换,这种全词转换可能是额颞叶痴呆症患者锲而不舍行为的特征。
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来源期刊
Neurocase
Neurocase 医学-精神病学
CiteScore
1.40
自引率
12.50%
发文量
70
审稿时长
6-12 weeks
期刊介绍: Neurocase is a rapid response journal of case studies and innovative group studies in neuropsychology, neuropsychiatry and behavioral neurology that speak to the neural basis of cognition. Four types of manuscript are considered for publication: single case investigations that bear directly on issues of relevance to theoretical issues or brain-behavior relationships; group studies of subjects with brain dysfunction that address issues relevant to the understanding of human cognition; reviews of important topics in the domains of neuropsychology, neuropsychiatry and behavioral neurology; and brief reports (up to 2500 words) that replicate previous reports dealing with issues of considerable significance. Of particular interest are investigations that include precise anatomical localization of lesions or neural activity via imaging or other techniques, as well as studies of patients with neurodegenerative diseases, since these diseases are becoming more common as our population ages. Topic reviews are included in most issues.
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