Agnosia is a rare disorder characterized by an inability to recognize and identify 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, developmental disorders, or other neurological conditions. 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.
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.
Agnosia can compromise quality of life.
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National Eye Institute (NEI)
31 Center Drive, Rm. 6A32 MSC 2510
National Institute on Deafness and Other Communication Disorders (NIDCD)
31 Center Drive, MSC 2320
National Organization for Rare Disorders (NORD)
Federation of voluntary health organizations dedicated to helping people with rare "orphan" diseases and assisting the organizations that serve them. Committed to the identification, treatment, and cure of rare disorders through programs of education, advocacy, research, and service.
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NINDS Disorders is an index of neurological conditions provided by the National Institute of Neurological Disorders and Stroke (NINDS). This valuable tool offers detailed descriptions, facts on treatment and prognosis, and patient organization contact information for over 250 identified neurological disorders.