Insomnia manifestations: Anxiety, depression and pain can lead to insomnia. Some patients have insomnia after surgery, radiotherapy or chemotherapy, manifesting as difficulty in falling asleep, frequent awakenings, shallow sleep and sleep time less than 6 hours. The harm of insomnia: It makes it difficult for patients to recover their physical strength and energy, poorly tolerate the side effects of radiotherapy, affect the prognosis of the disease and the recovery effect, and cause anxiety and depression with long-term insomnia. Misconceptions about insomnia: Many patients do not know enough about the dangers of insomnia and do not seek medical consultation in time, which develops into intractable insomnia and affects clinical treatment. Some patients take or increase the dose of Valium-type drugs on their own, leading to drug dependence.