How is sometimes symmetrical pain in the chest and back?

It is symmetrical pain in chest and back caused by cold, fatigue and other reasons. Generally, there are obvious tenderness points, which are often affected by weather changes and emotions.

Pectoral myofascial pain syndrome is a common cause of chest pain. Continuous or repeated stretching and strain of pectoral muscles, such as some work and exercise, chest muscle trauma, long-term bad posture, degenerative changes of thoracic vertebrae, etc., can cause myofascial pain. The change of patients' mood can lead to muscle tension through psychological reasons. In addition, mental stress causes sympathetic nerve excitement, increases muscle sensitivity and reflexive muscle spasm, which becomes a new harmful stimulus and forms a vicious circle. The common myofascial syndrome of thoracodorsal muscle includes pectoralis major syndrome, sternal muscle syndrome, latissimus dorsi syndrome, serratus anterior syndrome, rhomboid muscle syndrome, paraspinal muscle syndrome, intercostal myofascial syndrome and so on.