Post-irradiation neuromyotonia affecting trigeminal nerve distribution: an unusual presentation.

Diaz, J M; Urban, E S; Schiffman, J S; Peterson, A C · Neurology · 1992

case_series · Level IV

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Abstract

We describe two patients who developed neuromyotonia of the floor of the mouth after irradiation of a motor branch (V3) of the trigeminal nerve. The neuromyotonia manifested as sustained muscle contraction due to peripheral nerve dysfunction. The neuromyotonia in both patients was controlled with carbamazepine. Radiation-exposed nerves can become symptomatic months or years after completion of radiation therapy.

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