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Logopenic progressive aphasia with neologisms: a case report.
Hiroyuki Watanabe1,2, Manabu Ikeda3,4, Etsuro Mori5,3
1Department of Behavioral Neurology and Neuropsychiatry, Osaka University United Graduate School of Child Development, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan. watanabe@psy.med.osaka-u.ac.jp.
BMC Neurology
|November 27, 2019
Summary
Neologisms, or invented words, are rare in logopenic progressive aphasia (LPA). This case study highlights their presence in a patient with typical LPA, expanding the known clinical features of this neurodegenerative condition.
Area of Science:
- Neurolinguistics
- Neurodegenerative Diseases
- Clinical Case Studies
Background:
- Neologisms are common in acute cerebrovascular conditions, especially Wernicke's aphasia.
- Research on neologisms in primary progressive aphasia (PPA) within neurodegenerative disease is limited.
- This study focuses on the rare occurrence of neologisms in a specific type of PPA.
Observation:
- A case of a 74-year-old man with logopenic progressive aphasia (LPA) presenting with neologisms is detailed.
- Neuropsychological tests, MRI, and SPECT imaging were used for assessment.
- Neologisms constituted a significant part of his paraphasic errors during naming tasks, unusual for typical LPA.
Findings:
- The patient met all diagnostic criteria for LPA.
- The prominent feature was the presence of neologisms, a symptom rarely observed in early-stage LPA.
- This case challenges the typical presentation of LPA.
Implications:
- Neologisms are not exclusive to acute conditions and can occur in neurodegenerative aphasias.
- This case expands the understanding of the clinical spectrum of logopenic progressive aphasia.
- Further research is warranted to explore the frequency and significance of neologisms in LPA.
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