Agnosia

What is Agnosia?

Agnosia is a rare disorder characterised by an inability to recognise and identify objects or persons despite having knowledge of the characteristics of the objects or persons. People with agnosia may have difficulty recognising 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 recognising 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.

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.

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