When experiencing joint pain, you can use a hairdryer to blow on the affected area. The hot air from the hairdryer can dilate the local blood vessels, promote blood circulation, and relieve pain.
However, it is important to note that you should not blow for a long time. It is best to stop when you feel comfortable. Also, do not cover the hairdryer with a towel or cloth, as it may cause excessive heat and accidents. While blowing, you can also use your thumb and index finger to massage the area.