[Undertoad]

Here's what the Dystonia Foundation has to say:

http://www.dystonia-foundation.org/p...ystonia/85.php

• The diagnosis of psychogenic dystonia can be exceedingly difficult. Secondary dystonias and psychogenic dystonias, in particular, may have similar characteristics.

• In most cases only an experienced movement disorder expert can identify the subtle aspects of an individual’s history and physical examination that support a psychogenic cause for the symptoms.