brain, spinal cord, and nerve disorders
Agnosia
Introduction
Agnosia is loss of the ability to identify objects using one or more of the senses. Symptoms vary depending on where the brain is damaged. Doctors determine whether people have agnosia by asking them to identify common objects by sight, touch, or another sense and by doing a physical examination, tests of brain function, and imaging tests. The cause is treated if possible, and speech and occupational therapy may help. Agnosia is relatively rare. Usually, only one sense is affected. 