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Hemimasticatory spasm in hemifacial atrophy: Diagnostic and therapeutic aspects in two patients
Author(s) -
Ebersbach G.,
Kabus C.,
Schelosky L.,
Terstegge L.,
Poewe W.
Publication year - 1995
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.870100417
Subject(s) - hemifacial spasm , medicine , atrophy , magnetic resonance imaging , botulinum toxin , blepharospasm , trigeminal nerve , facial muscles , masticatory force , infratemporal fossa , surgery , anatomy , pathology , radiology , facial nerve , skull , orthodontics
We report two cases of hemimasticatory spasm in association with progressive hemifacial atrophy. On the basis of neurophysiological and magnetic resonance imaging assessments, a peripheral irritation of the trigeminal nerve–probably due to entrapment of the motor branches in the infratemporal fossa–is suggested as the cause of the involuntary movement. Local injections of botulinum toxin type A into the masticatory muscles proved to be a successful treatment in both patients.