HICCUP AND DYSFUNCTION OF THE INFERIOR OL IVARY COMPLEX

Two patients with chronic hiccup and MRI demonstrated lesions at the l evel oi the inferior olivary complex are here reported. Whereas the ne urological examination was normal in case 1, case 2 had the syndrome o f palatal myoclonus and progressive ataxia. In the case I, extensive e lectrophysiological studies were consistent with hiccup, in the absenc e of any other disorder (in particular, there was no evidence of palat al myoclonus). These findings suggest that the dysfunction of:he infer ior olivary complex could be implicated in the pathogenesis of hiccup.