Encyclopedia of Clinical Neuropsychology

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


  • Douglas I. KatzEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_440


Blocq’s disease


An inability to stand and walk in a normal and coordinated manner. Astasia means inability to maintain standing, and abasia refers to impaired coordination of gait. The term is usually applied to unusual, often bizarre patterns of gait and stance that appear to have no neuropathophysiologic basis. Conversion disorder is frequently the underlying cause. Patients may sway in a staggering, unstable manner, often catching themselves before falling. This syndrome is also referred to as Blocq’s disease.


References and Readings

  1. Morris, J. G., Mark de Moore, G., & Herberstein, M. (2006). Psychogenic gait: An example of deceptive signaling. In C. R. Cloninger & M. Hallett (Eds.), Psychogenic movement disorders: Neurology and neuropsychiatry. Philadelphia: Lippincott Williams & Wilkins.Google Scholar
  2. Okun, M. S., & Koehler, P. J. (2007). Paul Blocq and (psychogenic) astasia abasia. Movement Disorders, 22, 1373–1378.PubMedCrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of NeurologyBoston University School of MedicineBraintreeUSA