This is because the deepening and acceleration of breathing when crying can easily lead to a decrease in the partial pressure of carbon dioxide in the arterial blood, which can easily lead to respiratory alkalosis and sympathetic excitation, so that the patient can clinically show numbness in the hands, limbs, panic, palpitations and rapid heartbeat. This situation does not appear too nervous, after the patient stabilized emotion, the general symptoms can be quickly relieved, or you can put a plastic bag near the mouth and nose, breathing so that part of the exhaled carbon dioxide will be re-inhaled, can reduce the patient’s respiratory alkalosis problem, can improve the situation of numbness in the hands and feet.