Pregnant women with hyperemesis may experience the following symptoms in the early stage: 1. Elevated blood pressure, usually with systolic blood pressure higher than 140 mmHg or diastolic blood pressure higher than 90 mmHg. 2. Some patients may experience dizziness, headache, blurred vision and other symptoms, which are caused by elevated blood pressure, resulting in spasm of intracranial blood vessels, causing temporary ischemia and hypoxia. 3. 3. Patients may experience rapid weight gain and swelling of the lower extremities, mainly due to increased blood pressure, which leads to renal impairment and increased renal tubular permeability, resulting in the elimination of large amounts of protein from the urine and hypoproteinemia, resulting in water and sodium storage in the tissue interstitial space, resulting in weight gain and swelling. 4. The symptoms of increased intracranial pressure, hypertension is a serious complication during pregnancy and requires timely treatment, otherwise it can endanger the life of the pregnant woman and the fetus.