Methods The following scale has been used by one of the authors (VTT) in his botulinum clinic for several years: Grade 0 ... blepharospasm and hemifacial spasm. Observers assessed orbicularis ...

Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...