The patient was evaluated with MRI brain which showed a hyperintensity in the left inferior olivary nucleus (ION). With a precedent history of brainstem surgery. a rare manifestation of pathology in the Guillain-Mollaret triangle causing HOD was ascertained. Figure 4 depicts the Guillain-Mollaret triangle and its connections. https://allfixelectricales.shop/product-category/aluminium-ties/