Lying blood pressure systolic blood pressure lying 120mmHg sitting 150mmHg may be the cause of the reason there is upright hypertension or measurement error, you can make life adjustments, drug treatment. If it is diastolic blood pressure 120mmHg sitting 150mmHg should consult a doctor promptly. Upright hypertension various factors caused by small arteries persistent constriction related, also seen in the early stage of primary hypertension. Hypertension is diagnosed by three measurements of blood pressure not taken on the same day, with systolic blood pressure ≥ 140 mmHg and/or diastolic blood pressure ≥ 90 mmHg. If the diagnostic criteria are not met, it is important to avoid a high sodium, oily diet, eat plenty of fresh vegetables, engage in appropriate aerobic exercise, and ensure emotional stability. Measurement errors can occur if arm muscles are exerted while sitting for blood pressure measurement, if measurement is not taken after a quiet rest, or if the hose of the blood pressure measuring instrument is squeezed. It should be ensured that the measurement is done in the correct way. Diastolic blood pressure of 120mmHg sitting 150mmHg is considered severe hypertension and should be promptly consulted or an ambulance called. It is recommended to pay attention to monitoring blood pressure, if the blood pressure is abnormal, timely consultation.