"But this method is only applicable to cough caused by cold pathogen, not to cough caused by lung heat." The doctor said. Cold cough refers to the accumulation of cold in the lungs. At this time, the hot air will be transmitted to the respiratory tract, trachea, lungs and other parts through the back with a hot water bag. After these parts are heated, blood vessels dilate and blood circulation is accelerated, which can enhance the function of expelling cold, accelerate metabolic circulation and help relieve and treat cough. If the cough is caused by lung heat, the lungs will gather hot air, and then using hot compress will aggravate the condition. Therefore, when using hot compress, we must make clear the cause.

When applying a hot water bag to the back, it is advisable to keep the water temperature at about 80 degrees Celsius, but it also depends on the patient's own heat resistance. If the patient's body has a high degree of heat resistance, it can be heated appropriately. When applying the back, it is best to wrap the hot water bottle with a towel first, and then apply it gently on the back. Each back hot compress lasts about half an hour, and the hot compress time can be appropriately extended or shortened according to the patient's own situation. It should be noted that it is not always fixed in one place, but the hot water bottle can move back and forth, so that the heat dissipation range is wider.

In addition, hot water bottles can also be used to assist in the treatment of other diseases, such as low back pain caused by colds and rheumatism. But the cause must be clear, preferably under the guidance of a doctor.