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Acta Neurologica Belgica

, Volume 113, Issue 3, pp 327–329 | Cite as

Masticatory myorhythmia following pontine hemorrhage

  • Evelien Vancaester
  • Dimitri Hemelsoet
  • Miet De Letter
  • Patrick SantensEmail author
Letter to the Editor

Introduction

Myorhythmia is an involuntary regular, rhythmic movement, with a frequency of 1–3 Hz. In its most common form, it occurs in ocular and masticatory muscles (oculomasticatory myorhythmia, OMM), all or not in combination with skeletal muscles (oculofacial-skeletal myorhythmia, OFSM). When different body parts are involved, movements can either be synchronous or not. Masucci et al. [1] found clinicopathological correlates of limb myorhythmias in autopsy series, with involvement of the dentate nucleus, superior cerebellar peduncle, substantia nigra or inferior olive.

OMM or OFSM is most often associated with Whipple’s disease (WD) [2, 3, 4]. Neurologic manifestations emerge in 10–40 percent of patients with WD [5, 6]. OMM and OFSM occur in 8 percent of patients and are pathognomonic for this condition. Ocular myorhythmia consists mostly of convergent–divergent nystagmus, frequently in conjunction with supranuclear gaze palsy [6].

Other, less frequent disorders in which OMM or...

Keywords

Inferior Olive Masticatory Muscle Sick Sinus Syndrome Superior Cerebellar Peduncle Brainstem Auditory Evoke Response 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Conflict of interest

None.

Supplementary material

Supplementary material 1 (MPG 93822 kb)

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Copyright information

© Belgian Neurological Society 2013

Authors and Affiliations

  • Evelien Vancaester
    • 1
  • Dimitri Hemelsoet
    • 1
  • Miet De Letter
    • 2
  • Patrick Santens
    • 1
    Email author
  1. 1.Department of NeurologyGhent University HospitalGhentBelgium
  2. 2.Department of Logopaedic/Audiologic SciencesGhent UniversityGhentBelgium

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