Lung cancer can cause chest and shoulder pain, but it is not necessarily lung cancer because of chest and shoulder pain, there is a big difference between the two. The most common clinical causes of chest and shoulder pain are muscle strain of shoulder and back, frozen shoulder, or even severe cervical spondylosis. And a typical characteristic of this kind of pain is that the symptoms will be aggravated when there is much strain or wind or cold, and will be significantly relieved after rest. In contrast, chest and shoulder pain caused by lung cancer has more basic clinical manifestations, such as coughing, coughing up phlegm, coughing up blood, rising body temperature, losing weight, and losing appetite, and this type of chest and shoulder pain will not be relieved by rest, and will get worse with time.