Aphasia: Sudden and progressive

M. M. Mesulam*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter


An acquired disorder of language is known as aphasia (or dysphasia). Symptoms can include impairments of object naming, word finding, syntax, and comprehension. Some patients have a sparse, labored output; others have unusually voluminous but uninformative speech. The nature of the aphasia varies from patient to patient and reflects the principal lesion site within a distributed left-hemisphere language network. Aphasia can start suddenly when caused by cerebrovascular accidents or progresses relentlessly when caused by neurodegeneration. A neurodegenerative disease that selectively impairs language is known as primary progressive aphasia.

Original languageEnglish (US)
Title of host publicationThe Curated Reference Collection in Neuroscience and Biobehavioral Psychology
PublisherElsevier Science Ltd.
Number of pages5
ISBN (Electronic)9780128093245
StatePublished - Jan 1 2016


  • Aphasia
  • Clinical
  • Diagnosis
  • Examination
  • Language
  • Neurodegenerative
  • Neuropathology
  • Pathophysiology
  • Progressive
  • Sudden

ASJC Scopus subject areas

  • General Medicine


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