Astereognosis

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Astereognosis Classification and external resources
ICD-9	780.99

Astereognosis is a form of agnosia where a person fails to successfully identify objects by touch when visual information is not used.

It is associated with lesions of the parietal lobe.^[1]

[edit] See also

• Stereognosis

[edit] References

v • d • e Symptoms and signs: Speech and voice (R47-R49, 784) Aphasia/Dysphasia Expressive aphasia - Receptive aphasia - Conduction aphasia Other speech disturbances Dysarthria - Schizophasia Symbolic dysfunctions Dyslexia - Alexia - Agnosia (Prosopagnosia, Astereognosis) - Apraxia - Acalculia - Agraphia Voice disturbances Dysphonia - Aphonia

v • d • e Lesions of spinal cord and brain Spinal cord sensory: Sensory ataxia - Tabes dorsalis motor: Motor neurone disease mixed: Brown-Séquard syndrome - cord syndrome (Posterior, Anterior, Central/Syringomyelia) - Subacute combined degeneration of spinal cord (B12) Anterior spinal artery syndrome Brainstem Medulla (CN 8, 9, 10, 12) Lateral medullary syndrome/Wallenberg (PICA) - Medial medullary syndrome (ASA) Pons (CN 5, 6, 7, 8) Lateral pontine syndrome (AICA) - Millard-Gubler syndrome (lateral) - Medial pontine syndrome (basilar) - Foville's syndrome (dorsal, basilar) - Locked-In syndrome (ventral) - Internuclear ophthalmoplegia - One and a half syndrome Midbrain (CN 3, 4) Weber's syndrome (ventral peduncle, PCA) - Benedikt's syndrome (ventral tegmentum, PCA) - Parinaud's syndrome (dorsal, tumor) Cerebellum lateral (Dysmetria, Dysdiadochokinesia, Intention tremor) - medial (Cerebellar ataxia) Basal ganglia Chorea - Dystonia - Parkinson's disease Cortex ACA syndrome - MCA syndrome - PCA syndrome frontal lobe: Expressive aphasia - Abulia parietal lobe: Receptive aphasia - Hemispatial neglect - Gerstmann syndrome - Astereognosis occipital lobe: Balint's syndrome - Cortical blindness - Alexia without agraphia temporal lobe: Cortical deafness - Prosopagnosia Other Subclavian steal syndrome - Upper motor neurone lesion (Clasp-knife response) - Lower motor neurone lesion