According to the American Cancer Society, cancer causes a myriad of symptoms and feelings that include pain, nausea and fatigue. The particular sensations and symptoms that a cancer patient experiences are dependent on the type of cancer he has.
There are many general signs and symptoms of cancer. The American Cancer Society explains that a symptom is experienced by the patient while a sign is something visible to his friends and family. Having signs and symptoms of cancer does not mean that a person necessarily has cancer, but it does mean that he needs to visit a doctor to be sure.
The first symptom of cancer is unexplained weight loss. Many patients with cancer lose 10 or more pounds without trying to lose weight before they are diagnosed. Another symptom of cancer is fever. The American Cancer Society states that fevers are common with cancer and often occur when the cancer has spread. Another symptom is extreme fatigue, which occurs at any time throughout a person's experience with cancer.
Pain is another common symptom of cancer, according to the American Cancer Society. Patients with cancer often experience pain that does not go away easily and that is localized to areas of their bodies where cancer has spread. Other common symptoms include skin changes, sores that don't heal, changes in bowel or bladder functions, and unusual bleeding or discharge.