CSTE Position Statement(s)
Acute onset of hypertonia and/or painful muscular contractions (usually of the muscles of the jaw and neck) and generalized muscle spasms without other apparent medical cause (as reported by a health professional)
A case that meets the clinical case definition
The 1990 case definition appearing on this page was re-published in the 1996 CSTE position statement 1996-18. Thus, the 1996 and 1990 versions of the case definition are identical.