The symptoms of dizziness and blackness when the patient gets up after sitting for a long time are considered to be caused by postural hypotension. Postural hypotension is seen in people who are in poor physical condition, such as patients who are very thin, have low blood pressure, or have anemia or frequent inactivity, which may lead to transient hypotension after sitting for a long time. Patients are advised to visit the hospital for relevant examinations, such as the improvement of blood pressure in the prone and standing positions, as well as ultrasound of the neck vessels, transcranial Doppler, blood glucose and lipid tests, and symptomatic treatment if there are problems in these areas. Patients must get up slowly to avoid unnecessary injuries caused by falls. If there is anemia, the patient should be given treatment to replenish blood and Qi.