Acta Neurol Belg (2017) 117:787–788 DOI 10.1007/s13760-017-0753-3 LETTE R T O T HE EDI T OR Tongue biting resulting from sleep-related facio-mandibular myoclonus as a cause for misdiagnosed epilepsy 1 1 Marlena Hupalo Dariusz J. Jaskolski Received: 1 December 2016 / Accepted: 23 January 2017 / Published online: 4 February 2017 Belgian Neurological Society 2017 Facio-mandibular myoclonus (FMM) is a very rare sleep- clusters with minimum 3 bursts in 4–5 s intervals, often related movement disorder, characterized by myoclonic with clicking sound of teeth. Mouth closing was marked jerks of masseter, orbicularis oculi and oris muscles in with the EEG muscle artifacts and contraction of the facial sleep with painful tongue biting (TB). Patients are referred muscles on the surface EMG. No ictal or interictal to epilepsy centers as nocturnal seizures. TB may be epileptiform activity was present. There was no contraction semiological feature of focal epilepsy and of tonic–clonic of the biceps brachii or tibialis anterior (Fig. 1). seizures. Biting located on the lateral margin of the tongue All those ﬁndings sufﬁced to establish the diagnosis of conﬁrms the epilepsy with 100% speciﬁcity . FMM. The patient was started on Clonazepam 2 mg q.h.s. We present a 62-year-old
Acta Neurologica Belgica – Springer Journals
Published: Feb 4, 2017
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