Myth 1: Cancer patients taking morphine means that they are already facing death Overseas data show that the correct application of morphine prolongs the life of cancer patients, which is due to: 1. the disappearance of pain, 2. the improvement of sleep, 3. the enhancement of appetite and physical fitness; and the application of opioids is not based on the expected length of life, but based on the degree of pain to decide. Myth 2: Painkillers are used only when the pain is severe In fact, painkillers are safer and more effective when used in a timely manner and on schedule, and require a lower dose. Patients whose pain is not relieved for a long time are prone to anxiety, sleep and food difficulties, affecting the quality of life of the patient, and the resulting wasting, failure, so that the patient can not tolerate the treatment of the original disease (such as surgery, radiotherapy). The purpose of pain treatment is to improve the quality of life in a real sense, i.e., pain-free sleep, pain-free rest, pain-free life. Myth 3: It is safer to use non-morphine drugs In fact, it is safer and more effective to use opioids (e.g. morphine) for patients with chronic cancer pain who need to use painkillers for a long time. The side effects of non-opioids are easy to ignore, and their effects have a “capping effect”. For patients with moderate to severe cancer pain, opioids have an irreplaceable position. Myth 4: Dulcolax is the safest and most effective painkiller In fact, due to high toxicity and poor pain relief effect, the World Health Organization does not recommend Dulcolax for the treatment of cancer pain. Myth 5: Morphine is easy to be addicted. Experimental research and clinical practice have confirmed that addiction rarely occurs when cancer pain patients take morphine or use transdermal patches orally. Overseas research shows that among 11882 cases of long-term large-dose regular use of opioids to control cancer pain, only 4 cases of mental dependence (addiction) occurred. In addition, even with long-term opioid use, opioids can be safely discontinued under the guidance of a pain specialist after the cause of cancer pain is controlled or the pain disappears. Long-term use of opioid analgesics in patients with cancer pain may require a gradual increase in dosage and can be successfully withdrawn when the pain subsides, a phenomenon of “physical dependence” that should be differentiated from so-called “addiction”. However, the use of opioids for non-medical purposes is a form of drug abuse, such as repeated intravenous injection of large doses of opioids, which can lead to “addiction”. Myth 6: Cancer pain can only be treated with medication. In fact, as long as the medication is used in strict accordance with the principle of the three-step ladder, 80% of cancer pain patients can get pain relief. In addition to drug treatment, for patients with poor drug treatment effect, spinal nerve or sympathetic nerve destruction, continuous drug infusion in the spinal canal, nerve radiofrequency and minimally invasive analgesia can also be used in the pain department, which can help patients effectively control cancer pain.