Agnosia is a neurological disorder characterized by an inability to recognize and identify objects, persons, sounds, shapes, or smells while the specific sense is not defective nor is there any significant memory loss. It is a rare disorder whereby a patient is unable to recognize and identify objects, persons, or sounds using one or more of their senses despite otherwise normally functioning senses. Agnosia can result from strokes, dementia, or other neurological disorders. It may also be trauma-induced by a head injury, brain infection, or hereditary. Additionally, some forms of agnosia may be the result of developmental disorders. The following are some key points about agnosia:

• Agnosia is a condition where damage to your brain keeps it from recognizing input from one of your senses, such as your vision, hearing, etc.
• Visual agnosia is the most common and better-understood agnosia.
• Agnosias are problems with your brain, not the senses themselves.
• Agnosia is managed supportively. Rehabilitation, speech, and occupational therapy play an important role in the treatment of agnosia and mainly focus on teaching patients to use the intact sensory modalities to compensate.
• For most patients with agnosia, full recovery is not possible and the quality of life is diminished.