Insomnia is very common, and I believe that everyone who clicked in to see it has experienced insomnia. Patients show difficulty in falling asleep, sleep is not deep, easy to wake up, self-conscious dreaming, early awakening, not easy to fall asleep after waking up, feeling tired or lack of wakefulness after waking up, and thinking about sleeping during the day. Patients often feel anxious and fearful about insomnia, and in severe cases, it may affect their mental efficiency or social function. Next, and you talk about the causes of insomnia, why insomnia? 1, acute stress. Mental tension, recent residence bereavement, somatic discomfort, sleep environment change, jet lag reaction, etc. 2, drug-induced insomnia. Caffeine, theophylline, thyroxine, cocaine, corticosteroids, anti-tremor paralysis drugs, adrenaline-like drugs. 3, psychological insomnia. Often due to excessive concern about their difficulty in falling asleep, worry, to overthinking, excitement or anxiety annoyance. In their attempts to fall asleep or continue to sleep again corresponding frustration, anger and anxiety make them more awake so that it is difficult to fall asleep. 4. Insomnia caused by mental illness. Early awakening caused by depression, mania with little or no sleep due to day and night excitement and restlessness. The diagnosis of insomnia must exclude various somatic diseases (peripheral neuritis, cremasteropathy, rheumatoid arthritis, malignant tumor) or symptoms accompanying other mental diseases (difficulty falling asleep common in anxiety disorders, early awakening common in depression). Whether or not the condition is insomnia requires analysis by a specialist based on the specific circumstances of each patient.