In life, we sometimes encounter this situation, someone suddenly appeared nervous, fear, discomfort in the chest area, quickly developed into panic, chest tightness, breathlessness, their own suspicion may be a heart attack, a sense of near death, emergency to the hospital for examination, the results are normal. Later, when they have a similar attack, they go to the hospital again urgently for examination. Some patients are even afraid of the attack and have to be near the hospital or live in the hospital to feel at ease, and the doctor tells the patient that this is an anxiety attack, also called panic disorder. So, is panic disorder a heart attack? What should we think of panic disorder? Is it a psychological problem or is it a physical illness? First, what is heart disease? Heart disease is a relatively common group of diseases of the circulatory system. The circulatory system consists of the heart, blood vessels and the neurohumoral tissues that regulate blood circulation. Diseases of the circulatory system, also known as cardiovascular diseases, include diseases of all of the above tissues and organs, and are common among internal diseases, of which heart disease is the most common and can significantly affect the patient’s workforce. Common symptoms include palpitations, angina pectoris, dyspnea, cough, chest pain or chest discomfort. So, what is panic disorder? Panic disorder, also known as acute anxiety disorder, is characterized by a sudden, unpredictable, recurrent, intense panic experience, usually lasting 5 – 20 minutes, with a sense of near-death or loss of control, where the patient often experiences a near-catastrophic end and is accompanied by symptoms of autonomic dysfunction. The patient suddenly feels a sense of sudden tension, fear, dread, or even panic when there is no special fearful situation, and then the patient has a sense of near death, loss of control, and a sense of catastrophe; the patient has muscle tension, fidgeting or hyperventilation, tachycardia, arrhythmia, headache, dizziness, numbness and abnormal sensation in the limbs, etc. Some patients have depersonalization. Panic attacks usually have a rapid onset and termination, usually lasting from a few minutes to tens of minutes, but can recur suddenly soon. Consciousness is always clear during the attack. There is anticipatory anxiety during the interval and some avoidance behavior. If the above conditions are met, the diagnosis of panic disorder should be considered. So what is panic disorder? Why do such episodes occur? If we consider the human body as a form of energy, the energy of a person as an isolated individual is relatively limited, and the workload that the nervous system, which is the main consumer of energy mobilization and transportation, can undertake is also relatively limited. If the energy of an individual is consumed in a large amount. Or the nervous system’s work capacity is mostly occupied, for example, a situation where the individual is physically or (and) mentally overstretched for a period of time and the energy consumption is excessive. Then there are factors that consume energy, the individual can not provide enough energy, it may induce panic attacks; another situation where the individual from childhood will spend most of their energy on safety and security, overly concerned about themselves, the energy that can be used for their own construction is limited, as the individual grows up if the poor state of mind a catastrophic event, or even not a catastrophic event, but do catastrophizing explanation easily induced panic attacks. And the mobilization of energy, the main bearer of transportation, the nervous system will appear nervous tension to increase the supply of energy, the nervous system will appear intensity or longer duration of work beyond normal function. The individual has a sense of control with enough energy to also maintain the normal work of the nervous system. If work beyond the physiological function occurs, the individual has a sense of loss of control. In this way, even some insignificant stimuli, such as changes in mood, changes in the surrounding environment, and climate change, can trigger panic attacks. Coupled with the fact that the nervous system has the ability to remember, this intense discomfort will leave a memory in the nervous system and easily induce panic attacks in similar situations. When we exercise, the body moves in a coordinated manner, the heart rate gradually accelerates and the blood pressure rises appropriately; however, in cases of prolonged nervous tension, there may be a sudden acceleration of the heart rate and an abnormal rise in blood pressure. Therefore, panic disorder is not heart disease, but panic attacks are not only a manifestation of panic disorder; there are other clinical problems that can present with panic attacks, and panic attacks have some similarities to heart disease. Once a panic attack occurs, first rule out somatic diseases such as heart disease and hyperthyroidism. After exclusion, only then can panic disorder be considered.