Episodic narcolepsy, also known as sudden sleepiness and thirsty sleep, is a sleep disorder with abnormalities related to sleep mechanisms. The main clinical features of episodic narcolepsy are irresistible sleep, episodes of sudden collapse, sleep paralysis, and hallucinations before falling asleep. In addition, patients may experience involuntary body movements during sleep and restless sleep at night. Most patients with episodic sleeping sickness have sudden daytime sleep attacks. The episodes can occur at school, on the bus, at the dinner table, or while watching television. Some children also suddenly go to sleep while standing in line or in the shower. Patients commonly have uncontrollable daytime sleepiness, which may occur several times a day, and may be followed by sudden sleepiness or sudden collapse. And it has nothing to do with the time of sleep at night. Instead, the fall is due to a transient loss of muscle control. The time can vary from a few seconds to up to several minutes. During this time, the patient is fully conscious but cannot move even a finger. This loss of muscle control usually occurs when there is a sudden change in mood, such as laughter, anger, surprise or fear. @N disease is found all over the world, regardless of age or race. However, many students are often `J maple whether or not to admonish nr sleep X of B skin W students, and do not receive arm year P attention and treatment. Adult patients, on the other hand, are prone to misinterpret the symptoms of this disease as stress or sleep deprivation. This disease is characterized by the patient going into what looks like deep sleep for a very short period of time. While the average person needs about an hour and a half to go from light sleep to deep sleep, people with this disease may need only a minute or less. The patient’s nighttime sleep is mostly intermittent and he or she wakes up easily. This is why the brain automatically goes to sleep during the day. Patients can fall asleep and wake up surprisingly quickly, and may be unconscious for a few seconds. Most of the dreams are colorful and the patient remembers most of them. They can even have a dream within seconds of falling asleep, which is why some people call it a dream-like hallucination. The real cause of this disease is not known yet. Multiple nap latency tests can help in the diagnosis of episodic sleeping disorder. The subject is placed in a comfortable, quiet, dimly lit room and allowed to take 20min naps 5-6 times at 2 hour intervals, usually at 10am, 12pm, 14pm, 16pm and 18pm, while monitored by PSG, recording the time from light off to sleep onset (according to EEG), the presence or absence of REM phase and the time of appearance; it is generally believed that the sleep latency of a normal person should be The presence of REM phase during naps and within 15 min of sleep onset (in normal people it occurs about 90 min after sleep onset) is considered to be a sleep episode starting from REM phase, if there are more than 2 sleep episodes starting from REM phase in MSLT and the whole night polysomnogram excludes other diseases that can cause narcolepsy If there are more than 2 episodes of sleep starting in the REM phase in MSLT and other diseases that can cause somnolence are ruled out by polysomnography throughout the night, the diagnosis of episodic sleepiness is confirmed.