Panic when you can’t sleep well may be caused by dietary factors, autonomic disorders, and combined heart disease. 1. Dietary factors: some people drink some strong tea, coffee, spirits before going to bed, which will affect the normal sleep at night, these drinks may cause sympathetic excitation, resulting in rapid heartbeat symptoms of panic. 2. Autonomic disorder: poor sleep is also known as insomnia, insomnia will interfere with the autonomic nervous system, stimulate the autonomic nervous system to cause sympathetic nerve excitation, there will be panic attacks. 3. Combination of heart disease: panic when you can’t sleep well, it may be the case that the patient’s insomnia is combined with heart disease, such as paroxysmal supraventricular tachycardia, coronary artery disease and so on. Usually to develop good sleeping habits, often sleep badly, and panic symptoms, to go to the hospital to check the cause and then targeted treatment.