In preeclampsia, high blood pressure happens along with other symptoms and signs, such as swelling of the ankles and legs, blurred vision, liver test abnormalities, and protein in the urine.Warnings and PrecautionsAvoid fish high in mercury, which may increase blood pressure.The use of cocaine, nicotine, or licorice (Glycyrrhiza glabra) can cause or worsen hypertension.Caffeine can make high blood