Is high blood pressure 140 and low blood pressure 90 the normal range?

High pressure 140mmHg low pressure 90mmHg has exceeded the normal blood pressure range, it is recommended to go to the cardiology department for a clear diagnosis and appropriate intervention.
Normal blood pressure range of high pressure does not exceed 120mmHg, low pressure does not exceed 80mmHg, high pressure 120 ~ 139mmHg, low pressure 80 ~ 89mmHg for normal high value, high pressure 140mmHg low pressure 90mmHg, has exceeded the normal blood pressure range.
If 3 measurements of blood pressure are taken on non-same day, if they are in line with systolic blood pressure ≥ 140mmHg or diastolic blood pressure ≥ 90mmHg, hypertension can be diagnosed. A high pressure of 140 mmHg and a low pressure of 90 mmHg is numerically at the level of grade 1 hypertension, but continued monitoring of blood pressure is required for the diagnosis of hypertension. Prompt consultation with a cardiovascular physician is recommended.
If there is no target organ damage or comorbidities in the perfect examination, therapeutic lifestyle intervention can be used first. If the control is not good or if there is already target organ damage or comorbidities such as heart, brain, kidney, etc., drug therapy such as amlodipine tablets is needed. Medications need to be used under the guidance of a physician to avoid self-medication.