noun. The incapacity to complete math problems, generally derived from partial neurological damage to the parietal lobe. Sometimes, an incapacity to read and write numerals may also occur.

Acalculia is difficulty or the inability to perform simple mathematic problems or calculations. It is a type of aphasia that is acquired due to brain injury or damage (such as from a stroke). Acalculi [..]

The inability to perform simple problems of arithmetic. [Click Here to Return to List]

Impaired ability in numerical concepts. These inabilities arise as a result of primary neurological lesion, are syndromic (e.g., Gerstmann Syndrome ) or acquired due to Brain damage.

Impairment in mathematical abilities secondary to a damage to a specific region of the Brain often caused by a Stroke, Tumor, or Trauma.

See dyscaculia.

A form of aphasia characterised 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. Origin: G. A-priv. + L. Calculo, to reckon (05 Mar 2000)