Wernicke's cramp is painful psychogenic muscle cramp precipitated by anxiety or fear. The condition was first described by the notable German neurologist Carl Wernicke in his seminal work Ein Fall von Crampus-Neurose.
Wernicke discovered the syndrome though his work with a patient known as Gerda S. who had an acute fear of pencil shavings which had a deleterious affect on her work as a clerk in the German electronics company Siemens. He achieved a partial cure through the use of high-frequency low-voltage signal applied to the temples which he demonstrated in a lecture at the University of Wrocław in May 1904.
Notes & references
- Published by Berliner klinische Wochenschrift, 1904
- Companion to Clinical Neurology by William Pryse-Phillips, Oxford University Press, 2nd Edition, 2003