What are the symptoms of cancer?

1) Persistent cough or bloody saliva. These symptoms usually represent simple infections, such as bronchitis or sinusitis. They may be symptoms of lung cancer and head and neck cancer. Anyone who coughs for more than a month or has blood in his cough mucus should see a doctor.

2) Changes in defecation habits. Most of the changes in defecation habits are related to your diet and liquid intake. Doctors sometimes see thin feces with colon cancer. Sometimes, cancer will show persistent diarrhea. Some cancer patients feel the need to defecate, and they still feel this way after defecation. If these abnormal intestinal diseases persist for more than a few days, they need to be evaluated. Significant changes in intestinal habits cannot be simply explained by dietary changes and need to be evaluated.

3) bloody stool. Doctors should always check the blood in feces. Hemorrhoids often cause rectal bleeding, but because hemorrhoids are very common, they may coexist with cancer. Therefore, even if you have hemorrhoids, you should ask a doctor to check your whole intestine when there is blood in your intestine. For some people, X-ray examination may be enough to make a definite diagnosis. Colonoscopy is usually recommended. It is recommended to have a routine colonoscopy after the age of 50, even if there are no symptoms. Sometimes, when the source of bleeding is completely clear (such as recurrent ulcers), these studies may not be needed.

4) Unexplained anemia (low blood cell count) Anemia refers to a disease in which the number of red blood cells in human blood is less than expected. Anemia should be checked frequently. There are many kinds of anemia, but blood loss almost always leads to iron deficiency anemia. Unless there is an obvious reason for continuous blood loss, this anemia needs to be explained. Many cancers may cause anemia, but intestinal cancer is the most common cause of iron deficiency anemia. The evaluation should include endoscopy or X-ray examination of the upper and lower intestines.

5) Changes in urination. Urinary symptoms may include frequent urination, low urine output, slow urine flow or overall changes in bladder function. These symptoms may be caused by urinary tract infection (usually in women) or male prostatic hypertrophy. Most men will have harmless prostate enlargement with age, and these urethral symptoms often appear, which may also indicate the occurrence of prostate cancer. . Men with urinary symptoms need further examination, which may include blood test and digital rectal examination.