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Diseases

Genetic and Rare Diseases Information Center (GARD)

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Agnosia


Other Names for this Disease

  • Monomodal visual amnesia
  • Primary visual agnosia
  • Visual amnesia
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Overview

Agnosia is characterized by an inability to recognize and identify objects and/or persons. Symptoms may vary, according to the area of the brain that is affected.[1] It can be limited to one sensory modality such as vision or hearing; for example, a person may have difficulty in recognizing an object as a cup or identifying a sound as a cough. Agnosia can result from strokes, traumatic brain injury, dementia, a tumor, developmental disorders, overexposure to environmental toxins (e.g., carbon monoxide poisoning), or other neurological conditions.[2][1] Visual agnosia may also occur in association with other underlying disorders.[1] People with agnosia may retain their cognitive abilities in other areas.[2] Treatment of primary agnosia is symptomatic and supportive; when it is caused by an underlying disorder, treatment of the disorder may reduce symptoms and help prevent further brain damage.[1]
Last updated: 4/22/2011

References

  1. Agnosia, Primary Visual. NORD. 2009; http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Agnosia%2C%20Primary%20Visual. Accessed 4/22/2011.
  2. Agnosia Information Page. NINDS. October 2, 2007; http://www.ninds.nih.gov/disorders/agnosia/agnosia.htm. Accessed 4/22/2011.
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Basic Information

In Depth Information

  • PubMed is a searchable database of medical literature and lists journal articles that discuss Agnosia. Click on the link to view a sample search on this topic.
Other Names for this Disease
  • Monomodal visual amnesia
  • Primary visual agnosia
  • Visual amnesia
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.