For instance, pain in a bone that becomes persistent and more severe may be due to bone cancer or cancer that has spread to the bones, while severe headaches that don’t resolve with standard treatments may be due to brain tumors. Abdominal or pelvic pain may be an indicator of cancers such as ovarian or colon cancer, while pain in the chest that persists, especially if accompanied by other symptoms, may be an indicator of lung cancer.
In general, persistent or worsening pain that doesn’t seem to have an explanation, especially if accompanied by other symptoms such as weight loss or fatigue, should be evaluated by a doctor and not simply ignored.
5. Unusual lumps or swelling

It is not uncommon to develop lumps and growths on the skin, and in most cases, these are benign conditions such as cysts, lipomas, or swollen lymph nodes. However, it is always a good idea to monitor the situation.
If a lump begins to grow in size, becomes inflamed or painful, persists for more than two weeks, becomes hard to the touch, doesn’t move when pressed against the skin, or develops in areas such as the breasts or the testicles, it is for the best to consult with your doctor.