Panic, fast heartbeat can be seen in the physiological state, can also be caused by related diseases, specific as follows: 1, physiological state: when because of strenuous physical exercise, heavy physical labor, as well as emotional fluctuations or mental overstress, will lead to rapid heartbeat, and the symptoms of panic. 2, pathological state: panic, fast heartbeat can also be caused by related diseases, such as Acute exacerbation of heart failure, tachyarrhythmia, hyperthyroidism and severe anemia. For diseases that cause rapid heartbeat and cause panic, it is important to actively go to the hospital, under the guidance of the doctor for effective treatment of related diseases, when the underlying disease is under control, the symptoms will also gradually ease.