A rare disease in which a person can't recognize objects, shapes, or people. Often due to a brain or neurological condition.

A rare disorder characterized by the lack of ability to recognize individuals, objects, shapes, sounds, or smells. There is no loss of memory. It is caused by neurological damage in the brain, specifically in the occipital or parietal lobes.

Inability to understand the import or significance of sensory stimuli: cannot be explained by a defect in sensory pathways or cerebral lesion: the term has also been used to refer to the selective loss or disuse of knowledge of specific objects because of emotional circumstances, as seen in certain schizophrenic, anxious, and depressed patients. Occurs with neurological deficit. For types of agnosia see the specific term.

Loss of the ability to comprehend the meaning or recognize the importance of various forms of stimulation that cannot be attributed to impairment of a primary sensory modality. Tactile agnosia is characterized by an inability to perceive the shape and nature of an object by touch alone, despite unimpaired sensation to light touch, position, and other primary sensory modalities.

Loss of the ability to distinguish the significance of stimuli; may be auditory, visual, olfactory, tactile, or gustatory.

Agnosia is inability to identify an object using one or more of the senses. Diagnosis is clinical, often including neuropsychologic testing, with brain imaging (eg, CT, MRI) to identify the cause. Prognosis depends on the nature and extent of damage and patient age. There is no specific treatment, but speech and occupational therapy may...

Agnosia is characterized by an inability to recognize and identify objects and/or persons. Symptoms may vary, according to the area of the brain that is affected. It 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...

Agnosia, loss or diminution of the ability to recognize objects, sounds, smells, tastes, or other sensory stimuli. Agnosia is sometimes described as perception without meaning. It is often caused by trauma to or degeneration of the parts of the brain involved in the integration of experience...