The pain in the latissimus dorsi muscle is considered to be caused by trauma, fasciitis, ankylosing spondylitis and other reasons. 1. Trauma: If the latissimus dorsi muscle is squeezed or bumped in daily life or during exercise, causing damage to the local tissues of the latissimus dorsi muscle, it may lead to the symptoms of latissimus dorsi pain. 2. Fasciitis: strenuous exercise or excessive exercise, so that the latissimus dorsi muscle strain or local tissues are cooled, the phenomenon of aseptic inflammation, when the aseptic inflammation stimulates the nerve tissues of the latissimus dorsi muscle, the symptoms of latissimus dorsi muscle pain may occur. 3. Ankylosing spondylitis: when suffering from ankylosing spondylitis, the tendons and attachment points of the latissimus dorsi muscle may become inflamed and release a large number of inflammatory factors, which stimulate the local nerve tissues and lead to the symptoms of latissimus dorsi pain. There are many causes of latissimus dorsi pain, including cervical spondylosis, thoracic spine tumor and intercostal neuralgia, etc. It is recommended to go to the hospital in time for examination to find out the cause of the disease, and then carry out targeted treatment as soon as possible to avoid the impact on your health.