Panic and nervousness caused by hypoglycemia can be relieved by chocolate intake, but other causes of panic and nervousness can not be relieved by chocolate, and need to identify the cause of the disease and then treat the cause. The causes of panic and nervousness include physiological and pathological, physiological causes include prolonged late night, anxiety, excessive tension, etc.; pathological causes include hypoglycemia, cardiac arrhythmia, hyperthyroidism, asthma, high blood pressure and other diseases. Hypoglycemia-induced panic and nervousness is due to sympathetic nerve excitement caused by the lowering of blood glucose, which can be quickly relieved by sugary foods or chocolate. For panic and nervousness caused by reasons other than hypoglycemia, chocolate intake is ineffective, and it is recommended that the cause of the condition be clarified, and that the cause of the condition be regulated and treated under the guidance of a doctor.