The pain under the right chest is mainly due to the attachment point of the muscle at the bone, and the attachment point will cause local formation of sterile inflammatory lesions due to muscle fatigue, strain, strain, and cold, and the inflammatory metabolites will stimulate the peripheral nerves around the area to produce pain. In addition, the formation of inflammatory edema stimulates the surrounding muscles and leads to muscle tension, resulting in pain due to the relative stretching of the muscles. When pressure is applied by hand, the pain tends to increase due to further stimulation. Since this area is susceptible to cold, blood circulation slows down and inflammatory metabolites accumulate, leading to further stimulation of the surrounding tissues and painful symptoms. After this condition, warm compresses should be applied to avoid getting cold, and ointments that activate blood circulation and relieve stasis and tendons can be applied externally, such as wound pain relief and blood circulation pain relief ointment, to increase blood circulation and promote the absorption of inflammation. You can also use warm water bags for hot compresses to improve circulation and promote the elimination of edema.