Pectoral myositis is a chronic sterile inflammation, usually caused by cold or strain, if the usual work is more, repeat the same action for a long time, the pectoral muscle will easily fatigue and lead to chronic inflammation, will feel uncomfortable chest. In addition, there is a cold, cold environment will reduce blood circulation in the chest, resulting in continuous muscle contraction, which will also lead to chronic inflammation of the pectoral muscle, the main symptom is discomfort or pain. After getting pectoral myositis you can rest or keep warm, bake electricity, can relieve the symptoms, but there is a certain possibility of recurrence later, so you still need protection.