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**Astereognosis**

ICD-11
ICD-10
ICD-9	780.99
OMIM	[1]
DiseasesDB	[2]
MedlinePlus	[3]
eMedicine	/
MeSH	{{{MeshNumber}}}

Astereognosis is a form of agnosia and is the complete or partial inability to identify an object by touch without visual input.

Astereognosis is associated with lesions of the parietal lobe or Dorsal column.^[1]

See also[]

Stereognosis

References[]

↑ Normal"> Sensory > Normal.

v·d·e

Lesions of spinal cord and brain

Spinal cord/
vascular myelopathy

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)
Cauda equina syndrome

Anterior spinal artery syndrome


Medulla (CN 8, 9, 10, 12)	Lateral medullary syndrome/Wallenberg PICA Medial medullary syndrome/Dejerine ASA
Pons (CN 5, 6, 7, 8)	Lateral pontine syndrome (AICA) (lateral) Medial pontine syndrome/Millard-Gubler 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 syndrome ventral tegmentum, PCA Parinaud's syndrome dorsal, tumor Nothnagel's syndrome Claude's syndrome
Other	Alternating hemiplegia

lateral (Dysmetria
Dysdiadochokinesia
Intention tremor)
medial (Cerebellar ataxia)

ACA syndrome
MCA syndrome
PCA syndrome

Thalamic syndrome

Other

Subclavian steal syndrome
Upper motor neurone lesion (Clasp-knife response)
Lower motor neurone lesion

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noco (m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug (N1A/2AB/C/3/4/7A/B/C/D)

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