Wernicke's encephalopathy (WE) is an acute neurological condition characterized by the triad of ophthalmoparesis with nystagmus, ataxia, and global confusion. WE is a life-threatening illness caused by thiamine deficiency, primarily affecting the peripheral and central nervous systems. Thiamine deficiency is predominantly associated with chronic alcoholism, but various other causes have also been reported, including severe malnutrition, prolonged parenteral nutrition, malignancies, immunodeficiency syndromes, liver disease, hyperthyroidism and severe anorexia nervosa, and hyperemesis gravidarum. We, hereby, report a unique case of WE induced by hyperemesis gravidarum that presented in mid-trimester of pregnancy in a rather extremely unusual way with focal seizures and secondary generalization but fortunately ended up with a good feto-maternal outcome.