There are many causes of drowsiness and amnesia, the common causes are mainly the following: First, vascular dementia, due to neurodegenerative disease, mostly seen in elderly patients, mainly manifested as cognitive dysfunction, memory loss, drowsiness and weakness, there is no effective treatment, taking brain protection drugs such as olanzapine and piracetam, can slow down the disease process. Second, epilepsy, referring to the abnormal discharge of neurons caused by frequent seizures easily cause brain function damage, drowsiness, forgetfulness, serious cases can lead to coma, regular use of anti-epileptic drugs such as carbamazepine, sodium valproate, can effectively control seizures. Third, cerebrovascular diseases, such as cerebral hemorrhage, large cerebral infarction and other diseases, can cause brain function impairment, manifested as drowsiness, physical activity impairment, memory loss, improve the head-related examination, you can clarify the specific cause, so as to carry out targeted treatment.