What is Agnosia?
Agnosia is a rare disorder characterized by an inability to recognize and identify objects or persons despite having knowledge of the characteristics of the objects or persons. People with agnosia may have difficulty recognizing the geometric features of an object or face or may be able to perceive the geometric features but not know what the object is used for or whether a face is familiar or not. Agnosia 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, dementia, or other neurological disorders. It typically results from damage to specific brain areas in the occipital or parietal lobes of the brain. People with agnosia may retain their cognitive abilities in other areas.
Is there any treatment?
Treatment is generally symptomatic and supportive. The primary cause of the disorder should be determined in order to treat other problems that may contribute to or result in agnosia.
What is the prognosis?
Agnosia can compromise quality of life.
What research is being done?
The NINDS supports research on disorders of the brain such as agnosia with the goal of finding ways to prevent or cure them.
National Organization for Rare Disorders (NORD)
P.O. Box 1968
(55 Kenosia Avenue)
Danbury, CT 06813-1968
orphan@rarediseases.org
http://www.rarediseases.org
Tel: 203-744-0100 Voice Mail 800-999-NORD (6673)
Fax: 203-798-2291
National Eye Institute (NEI)
National Institutes of Health
Bldg. 31, Rm. 6A32
Bethesda, MD 20892-2510
2020@b31.nei.nih.gov
http://www.nei.nih.gov
Tel: 301-496-5248 Professionals 800-869-2020
National Institute on Deafness and Other Communication Disorders (NIDCD)
National Institutes of Health
Bldg. 31, Rm. 3C35
Bethesda, MD 20892-2320
nidcdinfo@nidcd.nih.gov
http://www.nidcd.nih.gov
Tel: 301-496-7243 TTD/TTY: 301-241-1055