acalculia

acalculia

 [a″kal-ku´le-ah]

inability to solve mathematical calculations.

a·cal·cu·li·a

(ā'kal-kyū'lē-a),

A form of aphasia characterized by the inability to perform simple mathematical problems; found with lesions of various areas of the cerebral hemispheres, and often an early sign of dementia.

[G. a- priv. + L. calculo, to reckon]

Acalculia

An inability to perform simple mathematical calculations (adding subtracting, multiplying, dividing); loss of a previously possessed ability to engage in arithmetic calculation. 
Brain locations Parietal lobe (angular gyrus), frontal lobe
Associations Dementia, Gerstmann syndrome

acalculia

Neurology Loss of a facility with arithmetic calculation

a·cal·cu·li·a

(ā-kal-kyū'lē-ă)

A form of aphasia characterized by the inability to perform simple mathematical problems; found with lesions of the cerebral hemispheres, and often an early sign of dementia.

[G. a- priv. + L. calculo, to reckon]

acalculia

Total or partial loss of the ability to perform even simple arithmetical calculations. This may rarely be a specific developmental disorder, but is more often acquired as a result of brain damage, usually to the PARIETAL LOBE, in the course of a STROKE. In this case, the acalculia is a kind of APHASIA. Acalculia without obvious cause may be a herald of DEMENTIA.