The characteristics of the arterial hypertension (AH) clinical signs according to the types of diastolic blood pressure (DPB) daily profile in comparison with systolic blood pressure (SBP) daily profile types in 82 patients (33 men and 49 women), mean aged 56 ± 11 years, were studied. Statistical analysis was performed on a PC using the «Microsoft Office Excel 2010» and «STATISTICA» programs. It was found that DPB is as important as SPB hemodynamic parameter in patients with AH, and violation of its circadian rhythm leads to AH potentiating. To higher risk of DBP pathological daily profile types prone females, patients with a short history and the initial stages of AH. Evaluation of DBP daily profile carries additional information about the course of the disease and should be performed in all patients with AH