Primary bone cancers (bone sarcomas) are rare conditions that can develop in any bone of the body. There are several types of bone cancers, including chondrosarcoma, Ewing's sarcoma, and osteosarcoma. Given their rare occurrence, the symptoms may often be misdiagnosed as those of other health conditions. So, one should keep an eye out for the following early signs of bone cancer, as doing so could ensure that one receives prompt diagnosis and treatment. Pain Pain could be triggered by several health complications and injuries. However, in the case of bone cancer, initially, the pain may not be constant. However, it could worsen at night or when the affected area is being moved, such as when walking with a tumor in the leg bone. With time the pain could become constant and may worsen with physical activity. Breathing problems Cancer that develops in the bones may also spread to organs like the lungs. If the cancer has reached this region, one may experience breathing difficulties. They may also experience other early signs of bone cancer, like chest pain, wheezing, chronic cough, and coughing blood. One should consult an expert right away if they experience any such symptoms. Fractures Those with bone cancer are likely to experience sudden fractures, as the tumor could weaken the bone to the extent that it breaks even with the slightest pressure. Such weakened bones are likely to cause a stinging sensation and unbearable pain in the affected region. Lumps or swelling Sometimes, one may develop swelling or lumps due to certain injuries. But this may also be a sign of bone cancer. The lump or swelling may not develop until the pain in the affected bone becomes severe. Further, cancers in the bones of the neck may sometimes cause a lump in the back of the throat that may make it difficult to swallow or breathe. Numbness When one is affected by cancer in the bones of the spine, the tumor may press against the nerves that extend out of the spinal cord. This may cause numbness and a tingling sensation in various parts of the body based on the location of the tumor. Issues with movement Those with bone cancer may find it difficult to walk normally. Restricted movement is a prominent sign of weakening of the bones in the legs due to the development of cancer in the region. The tumor may also cause a joint to swell and become tender or stiff. So, one may experience pain and even walk with a limp when dealing with bone cancer. Such symptoms should be examined by a healthcare expert as soon as possible. Fatigue Bone cancer may spread to other organs in the body over time. Further, the disease can usually change how cells work, cause inflammation, and make one feel nauseated and dehydrated. So, cancer of the bones may alter hormone levels, damage tissues and cells, and reduce blood count. All of these factors may lead to fatigue even if one gets adequate rest.