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Πέμπτη 7 Ιανουαρίου 2021

Delayed diagnosis of prosopagnosia following a hemorrhagic stroke in an elderly man: A case report.

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Delayed diagnosis of prosopagnosia following a hemorrhagic stroke in an elderly man: A case report.

World J Clin Cases. 2020 Dec 26;8(24):6487-6498

Authors: Yuan Y, Huang F, Gao ZH, Cai WC, Xiao JX, Yang YE, Zhu PL

Abstract
BACKGROUND: Acquired prosopagnosia is a rare condition characterized by the loss of familiarity with previously known faces and the inability to recognize new ones. It usually occurs after the onset of brain lesions such as in a stroke. The initial identification of prosopagnosia generally relies on a patient's self-report, which can be challenging if it lacks an associated chief complaint. There were few cases of prosopagnosia presenting purely as eye symptoms in the previous literature confirmed by functional magnetic resonance imaging (MRI).
CASE SUMMARY: We present a case of delayed diagnosis of prosopagnosia after a right hemisphere stroke in an elderly man whose chief complaint was persistent and progressive "blurred vision" without facial recognition impairment. Ophthalmic tests revealed a homonymous left upper quadrantanopia, with normal visual acuity. He was found by accident to barely recognize familiar faces. The patient showed severe deficit in face recognition and perception tests, and mild memory loss in neuropsychological assessments. Further functional MRI revealed the visual recognition deficits were face-specific. After behavioral intervention, the patient started to rely on other cues to compensate for poor facial recognition. His prosopagnosia showed no obvious improvement eight months after the stroke, which had negative impact on his social network.
CONCLUSION: Our case demonstrates that the presentation of prosopagnosia can be atypical, and visual difficulties might be a clinical manifestation solely of prosopagnosia, which emphasizes the importance of routinely considering face recognition impairment among elderly patients with brain lesions.

PMID: 33392335 [PubMed]

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