Intermittent amnesia is the tendency to forget things for a certain period of time, sometimes for better or worse. Although the pathogenesis is not conclusive, psychological factors are generally considered to be the trigger for the disorder. It is believed that patients may have inherent defects caused by genes and life trauma, and when faced with stressful life events, they are unable to respond to them in a mature manner and dissociate. Treatment is usually based on psychotherapy, including identification and appropriate treatment of stressors, moderate listening, hypnotherapy or medication-assisted sessions, and encouraging the patient to overcome symptoms (e.g., memories). It is a new X-ray examination technique that has been widely used in clinical practice since the 1990s. It involves selecting an access artery, usually the right femoral artery, placing an arterial sheath through the right femoral artery, selecting a different catheter through the arterial sheath, selecting the artery to be shown under the guidance of a guide wire, and injecting iodine-containing contrast agent. The trajectory of the vessels through which the contrast agent passes is continuously photographed, and digital subtraction imaging of the cerebral vessels is performed through electronic computer-aided imaging. 2.Psychology test: it is easier to forget something in a certain period of time.