If the patient often appears drowsy, it is also important to pay attention to the possibility that it may produce many disease omens. If the patient exists in a subhealthy state, drowsiness will occur, and of course, excessive fatigue and staying up late may also lead to drowsiness the next day. Neurological diseases may also lead to drowsiness, such as cerebral infarction, cerebral hemorrhage and other diseases that cause vascular accidents, as well as brain infections and trauma to brain tissue, all of which may lead to drowsiness. Therefore, for patients with narcolepsy, further examination in neurology should be conducted to determine whether the narcolepsy is caused by functional factors or organic disease factors.