John Libbey Eurotext

Prominent eye muscle artefact on the EEG of a patient with Hashimoto thyroiditis with primary hypothyroidism Volume 19, issue 4, December 2017


1 Children's Hospital of Los Angeles - Neurology, Los Angeles, California 90027-6016, USA
* Correspondence

For details visit the Multimedia Teaching Material/EEG Section of the website A 15-year-old boy with Hashimoto's thyroiditis presented with a paroxysmal episode. The EEG demonstrated prominent superior and lateral rectus muscle artefacts, superimposed on a normal background. Since seizures are known to occur in patients with thyroiditis, correct interpretation of the interictal EEG was very important. Initially, the frontal discharges may have been mistaken for epileptiform [...]