While cancer can theoretically cause almost any kind of symptom you can think of, some of them are particularly prevalent, especially pain, fatigue, and depression, and sometimes they can be very severe. You’ll often be confused about where these symptoms come from, what they mean to you, and what to do about them, so in the end, this fear can make them worse and negatively affect your life. What to do in the face of fear The more knowledge you have, the less fear you will have in the face of many difficulties, and many people will find that a good understanding of the symptoms will help to improve their ability to deal with these situations in time to help deal with these problems associated with cancer. Pain is one of the characteristics of tumors About 2/3 of people with tumors experience pain. At least 90% of pain caused by tumors can be relieved completely or to a great extent. Painkillers must be taken regularly (usually every four hours). They are not addictive and do not shorten life expectancy, and the main adverse effects of painkillers are constipation, nausea (both of which can be relieved in most cases), and insomnia (which usually goes away after 2-3 days). Pain is one of the characteristics of tumors and a source of anxiety and fear for most patients. Many people believe that once you have a tumor, you are bound to suffer pain and have no way of coping with it. This idea is completely wrong. Not every patient with a tumor feels pain, in fact only 2/3 of patients do; and once pain is present, in most cases they can be partially or even completely relieved. Tumors can produce pain in many ways. Oddly enough, usually the pain does not come from the tumor itself; tumor tissue produces pain by compressing and interfering with neighboring tissues Many tissues and organs can be the source of pain. Diagnosing the true cause of pain is important for effective pain relief. In most cases, your doctor will discover the true cause of the pain, and your own description of the pain and your answers to the doctor’s inquiries become very important. There are many ways to relieve pain, and you play an important role in this process. Your understanding of the treatment process (why it is being used and what it is intended for) is a key factor in determining the outcome.