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.
 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. Visual agnosia may also occur in association with other underlying disorders. People with agnosia may retain their cognitive abilities in other areas. 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.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.
Last updated: 4/22/2011
- Agnosia, Primary Visual. NORD. 2009; http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Agnosia%2C%20Primary%20Visual. Accessed 4/22/2011.
- Agnosia Information Page. NINDS. October 2, 2007; http://www.ninds.nih.gov/disorders/agnosia/agnosia.htm. Accessed 4/22/2011.
- The Merck Manuals Online Medical Library provides information on this condition for patients and caregivers.
- The National Institute of Neurological Disorders and Stroke (NINDS) collects and disseminates research information related to neurological disorders. Click on the link to view information on this topic.
- The National Organization for Rare Disorders (NORD) is a federation of more than 130 nonprofit voluntary health organizations serving people with rare disorders. Click on the link to view information on this topic.
- 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.