A Case of Bilateral "Middle Ear Myoclonus" (P4.318)

Conclusions: Middle ear myoclonus is a heterogenous syndrome, and a misnomer as the underlying etiology may not necessarily be myoclonus. Localization can be central or peripheral and possible mechanisms include myoclonus, dystonia, peripheral nerve irritation (e.g. hemifacial spasm from a vascular loop), or muscular. In our case both cranial nerves V (to the stapedius muscle) and VII (to the orbicularis oculi) were involved. We propose a unifying term for the subjective sensations of tympanic membrane movement: oscillacusia. Under this term, the specific etiology causing the tympanic membrane movement should be elucidated and treated.Disclosure: Dr. Siegel has nothing to disclose. Dr. Wszolek has received personal compensation in an editorial capacity for Parkinsonism & Related Disorders and the European Journal of Neurology. Dr. Wszolek has received royalty payments for the discovery of LRRK2 gene mutations.
Source: Neurology - Category: Neurology Authors: Tags: Movement Disorders Poster Session: Miscellaneous Source Type: research