Low blood pressure can be caused by a variety of clinical reasons, including lack of exercise, nutritional deficiencies, dehydration, medication, etc. Typical symptoms include headache, dizziness, pallor, and cold extremities. 1. Reason: long-term sedentary and lack of movement, lack of exercise in the population, it is easier to appear low blood pressure. When the human body is undernourished, the body lacks sufficient nutrients, which can easily trigger anemia, which in turn causes low blood pressure. In addition, when dehydrated, the blood circulation of the body is blocked, which affects the stability of blood pressure and makes it easy to have low blood pressure. If the dose of antihypertensive medication taken daily is slightly high, low blood pressure may also occur. 2. Symptoms: When the blood pressure is low, the blood supply to the cerebral arteries of the human body is insufficient, which is easy to cause headaches and dizziness, and dizziness is often manifested as erectile vertigo. Insufficient filling of facial capillaries, often manifested as pallor. Insufficient blood volume in the peripheral circulation is often characterized by cold extremities. The consequences of low blood pressure can be large or small, if a sudden drop in blood pressure or discomfort is more serious, it is recommended to consult a doctor in a timely manner.