Panic, also known as palpitations, may be a normal physiological reaction, or it may be a sign of some physical or mental illness. 1. Physiological reaction: people in excessive fatigue, strenuous exercise, emotional excitement, large amounts of alcohol, or lack of sleep, etc., there may be transient symptoms of panic, with the diet or psychological adjustment of panic symptoms will be alleviated. 2. Disease factors: the common diseases that lead to panic attacks are physical diseases and mental diseases. Physical diseases include cardiovascular diseases, digestive diseases, endocrine system diseases, such as coronary heart disease, hypertension, myocarditis, heart failure, arrhythmia, gastrointestinal and plant nervous system disorders, hyperthyroidism, anemia, hypoglycemia and so on. Mental illnesses are usually anxiety disorders. For patients with recurrent or persistent panic attacks, it is recommended that they go to the cardiology department of the hospital in a timely manner to improve the relevant examinations and take appropriate treatment measures after a clear diagnosis.