Recent memory loss may be caused by excessive work stress, overstress, overwork, or if there is a lack of sleep for a long time. It may also be caused by prolonged looking down at the phone or playing on the computer for a long time. If the patient has severe hypertension, it may cause hypertensive encephalopathy, which can also cause the above symptoms. It may also be caused by ischemic and hypoxic encephalopathy, which is usually seen mainly in chronic cerebral insufficiency of blood supply, mostly in middle-aged and elderly people, most of whom have atherosclerosis, hyperlipidemia and diabetes. It can also occur in young people, mainly due to vascular malformations and stenosis, and should be diagnosed by head and neck CTA if necessary. Alzheimer’s disease usually occurs in elderly people over 60 years of age. Patients mainly exhibit progressive intellectual decline and personality changes, and near-memory impairment can occur in the early stage.