The symptoms of nausea and vomiting in early pregnancy are normal and manageable at home. However, the condition of extreme severity, called hyperemesis gravidarum (HG), may require hospitalization. HG influences up to 3% of pregnancies and is described by weight reduction, dehydration and electrolyte deficiency. HG has critical complications for maternal prosperity and is related to unfriendly birth results that need prompt medical services. Alteration of type and quantity of foods consumed over the day might assist with improving the symptoms. Having more digestive food and liquids frequently can also assist in preventing morning sickness and vomiting. Ladies who are impacted by this problem should be stayed away from stress and get as much rest as possible. A patient needs to visit a clinician in case the symptoms are severe. In this way, continue monitoring and medications are highly recommended. The present review comprised of important information about hyperemesis gravidarum and its aetiology and pathophysiology together with its treatment options.