According to the diagnostic criteria for hypertension, diastolic blood pressure in patients with a low pressure of 90 and a high pressure of 130 is considered mild hypertension. In the absence of antihypertensive medication, the diagnosis of hypertension is made if the systolic blood pressure is ≥140 mmHg and/or the diastolic blood pressure is ≥90 mmHg when the blood pressure is measured in the office three times on non-same day. Patients with a previous history of hypertension who have received regular blood pressure-lowering therapy are diagnosed with hypertension despite a blood pressure <140/90 mmHg. Blood pressure levels are continuously normally distributed in the population, and there is no clear boundary between normotension and elevated blood pressure; the criteria for hypertension are defined based on clinical and epidemiological data. Normal blood pressure is defined as systolic blood pressure <120 mmHg and diastolic blood pressure <80 mmHg; normal high values are systolic blood pressure 120-139 mmHg and diastolic blood pressure 80-89 mmHg. between normal blood pressure and elevated blood pressure is defined as normal high values. When blood pressure levels are at normal high values, it predicts that cardiovascular risk will be elevated. Hypertension is further classified into three classes according to the level of elevated blood pressure. Class I hypertension (mild) is 140-159 mmHg systolic and 90-99 mmHg diastolic; Class II hypertension (moderate) is 160-179 mmHg systolic and 100-109 mmHg diastolic; Class III hypertension (severe) is ≥180 mmHg systolic and ≥110 mmHg diastolic. The above criteria apply to men and women over 18 years of age. For children, the 95% median of blood pressure values in different age groups, usually lower than adult levels, was used. According to the above diagnostic criteria, a patient with a low pressure of 90 and a high pressure of 130 is already considered hypertensive. This level of blood pressure is considered mild hypertension. If the patient has a combination of clinical conditions and risk factors, oral antihypertensive medications are started. If there are no other comorbid conditions, treatment is based on lifestyle improvement.