If a patient currently has low low pressure, also known as low diastolic blood pressure, there are many reasons for this condition to occur. The first step is to ask if the patient is currently taking any special medications, such as an overdose of antihypertensive drugs, which may cause the patient’s blood pressure to fall below normal levels. In addition, when the patient is more resistant and weak, the blood pressure may also be lower than the daily level. There are also some patients who may have frequent nausea, vomiting, or diarrhea that can also cause a drop in blood pressure. Such patients should be treated with a combination of appropriate rehydration. Patients may also experience a drop in blood pressure due to severe anemia or major blood loss. If the drop in blood pressure is only mild, then it is recommended that the patient can take oral pulse drink to further raise the blood pressure and pay attention to finding the cause of the hypotension and treating the primary disease to help prevent the recurrence of the hypotension.