When a patient falls to the head and has a slight disorder of consciousness, it is called narcolepsy. The specific definition of narcolepsy is that the patient is able to wake up, answer the doctor’s questions correctly after waking up, and follow the doctor’s specific instructions to complete the corresponding actions, but after the actions are completed, the patient quickly falls asleep again and is called narcolepsy. In human beings, the impairment of consciousness starts from light to severe, from drowsiness to lethargy, and then to light coma, moderate coma and deep coma. Somnolence is the mildest form of disorder of consciousness. Usually the degree of brain damage is not very serious and should not require craniotomy.