Atypical neurological manifestations in Wernicke's encephalopathy due to hyperemesis gravidarum.

Wernicke encephalopathy may not be necessarily associated with the typical neurological triad and may not have noticeable hyperintensity signal in dorsomedial thalami, mammillary bodies, hippocampus and periaqueductal region during magnetic resonance imaging. Atypical neurological signs and symptoms following hyperemesis gravidarum would invariably respond immediately to appropriate dosage of parenteral thiamine. A lower loading dosage of thiamine (100 mg thrice daily) appeared adequate for management in women with normal MRI scans.