Palpitations and panic attacks can be caused by improper environment, improper emotions, medication ingredients, and diseases. 1. Improper environment: palpitations and panic attacks may be caused by improper environment. It is mostly related to the environment temperature is too high or too low, the environment is too noisy, the environment is too narrow. 2. Improper emotions: palpitations and panic attacks may be caused by improper emotions. For example, a high degree of emotional tension, excitement, depression and so on. Usually and emotional improper lead to nerve dysfunction related. 3. drug ingredients: like antidepressant drugs, antihypertensive drugs and central excitatory drugs. If you take them before going to bed, the composition of the drug is likely to cause adverse reactions. It may also lead to palpitations and panic attacks. 4. Diseases: like hyperthyroidism, heart failure, coronary heart disease and other diseases. Easily lead to the body in the state of metabolic abnormalities, may also lead to the heart in the state of ischemia and hypoxia. It may lead to palpitations and panic attacks. If you can’t sleep at night, you can listen to soft music or read a book to help you sleep. If there is any discomfort, consult a doctor in time and follow the doctor’s instructions, do not take sleeping pills on your own.