The most common cause of these symptoms is arrhythmia, and hypoglycemia is also more common. There are many kinds of arrhythmias, such as slow heartbeat, fast heartbeat, and irregular heartbeat, which may cause panic. Since heart panic itself can also cause systemic symptoms and thus body tremors, therefore, for heart panic, we should first exclude heart disease and perform ECG examination. In addition, patients with low blood glucose may also have panic attacks and feel tremors in their limbs, accompanied by cold sweat and hunger, and in serious cases, they may fall into coma. If there is diabetes in the past or have not eaten for a long time, pay attention to this aspect and consider taking sugar water or fruit sugar immediately, etc. If the above symptoms are relieved, consider that blood sugar is the cause, and if conditions are feasible, blood sugar check.