Low pressure 50mmHg is commonly seen in elderly patients, which may be related to the weakening of vascular elasticity, or it may be the state caused by organic diseases and after taking antihypertensive drugs, as follows:1. Related to the weakening of vascular elasticity: elderly patients may show simple systolic hypertension, which is characterized by elevated systolic blood pressure, while diastolic blood pressure is normal or low, which is often related to the weakening of vascular elasticity in the elderly.2. Organic diseases: It is necessary to actively exclude organic diseases, such as aortic closure insufficiency, which leads to a decrease in diastolic blood pressure.3, the state caused by taking antihypertensive drugs: for a low pressure of 50mmHg, it can also be seen in the state of low blood pressure caused by taking antihypertensive drugs in hypertensive patients. Hypotension is defined as blood pressure <90/60mmHg. Hypotension can be caused by a variety of reasons, including physiological hypotension and pathologic hypotension. For acute hypotension, it is common to see acute blood pressure reduction caused by hemorrhage, infection, shock, allergy, coronary heart disease, acute myocardial infarction, etc. Chronic hypotension can be seen in consumptive diseases, such as tuberculosis, tumors and organic heart disease, which can lead to chronic hypotension.