The causes of daytime sleepiness in the 80s include cerebrovascular disease, cardiovascular disease and medication factors. 1. cerebrovascular disease: including cerebral hemorrhage or cerebral infarction, etc. If an 80-something year old has a cerebral hemorrhage or a large cerebral infarction, it may lead to impaired consciousness, which manifests itself as daytime drowsiness, and the person should go to the hospital for medical treatment immediately after the onset of the disease. Diagnosis is confirmed by head CT or MRI. 2. Cardiovascular disease: for example, when suffering from bradyarrhythmia, acute myocardial infarction and other diseases may suddenly have symptoms of impaired consciousness and daytime sleepiness, which should be diagnosed immediately by combining with cardiac enzymes, electrocardiogram and other tests. 3. Medication factors: If the patient takes sedative-hypnotic drugs at night, such as diazepam, alprazolam, etc., daytime sleepiness may also occur. There are many reasons for daytime sleepiness. If daytime sleepiness persists, it is recommended to go to the hospital in time.