2020 April Fools' Case: Normally we'd prank you with this but given the current COVID-19 crisis we decided just to release it straight up without trying to trick anyone. Hopefully you can at least still enjoy a little laugh at this difficult time - view case

Acalculia

Acalculia (or acquired dyscalculia) represents the acquired loss of the ability to perform simple arithmetic tasks secondary to CNS pathology. It is not to be confused with developmental dyscalculia, which is a different entity and represents developmental disturbance of computational ability. 

As computational tasks necessitate an orchestrated interplay between visuospatial, verbal and conceptual cognitive functions, dyscalculias can have significantly variable symptoms. Impairments in some patients can, for example, solely affect recognition, or production of numbers, or inability to carry out simple arithmetic tasks despite ample knowledge of the principles of arithmetics 1

Major forms of acalculia:

  • primary acalculia (anarithmetria): inability to understand numerical concepts and to perform basic arithmetic tasks
  • secondary acalculia: impaired computational performance secondary to other cognitive functional damage (memory, language, or visuospatial deficits, etc.)
Share article

Article information

rID: 72881
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.