Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan


  • Irene PiryatinskyEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_1875




Adynamia refers to a general weakness and lack of energy evident through lack of verbal or overt behavior due to a disease or neurological conditions. It can manifest as lethargy, loss of strength, weakness in extremities, and difficulty initiating activities or completing tasks. Adynamia can be observed after trauma to the frontal lobes, multiple sclerosis, and other conditions. In language, verbal adynamia (lack of spontaneity of speech) is seen with lesions of the medial frontal lobes and refers to difficulty in initiation and maintenance of language output.


References and Readings

  1. Berrios, G. E. (2008). Classic text no. 76: ‘Asthenia’ by A. Dechambre (1865). History of Psychiatry, 19(4), 490–501.CrossRefGoogle Scholar
  2. Caplan, D. (1987). Neurolinguistics and linguistic aphasiology: An introduction. New York: Cambridge University Press.CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Butler Hospital and Alpert Medical School of Brown UniversityProvidenceUSA