Myth 4: Long-term use of opioids can lead to addiction Intravenous direct injection leads to a sudden increase in the concentration of the drug in the blood, which is prone to euphoria and toxicity, thus easily leading to addiction, and should be avoided. In the treatment of chronic pain, the use of controlled-release and extended-release preparations of opioids, when administered orally or absorbed through the skin, prevents the occurrence of excessive peak concentrations of the drug in the blood and keeps the blood concentration required for treatment constant, with minimal risk of addiction (psychogenic dependence). The development of tolerance or physical dependence on opioids does not imply addiction, nor does it affect the continued safe use of opioids for pain relief. Myth 5: Once a cancer patient uses opioids, there is no cure Many people think that as long as a cancer patient uses analgesics, especially morphine and other strong painkillers, it means that he or she has entered the “terminal stage” of cancer. This is a complete misunderstanding. Pain is one of the most common symptoms of cancer patients, and the severity of pain and whether or not to use strong painkillers have little to do with the clinical stage and severity of the disease. Cancer pain is a common phenomenon in the course of cancer disease and can occur at any time. Pain can cause a variety of serious harm, regardless of the stage of cancer, once the pain occurs, should receive pain treatment. Myth 6: If you still have pain after taking the medicine, you should change the medicine immediately When you first receive opioid treatment, doctors tend to use a small starting dose, and gradually adjust the dose of the medicine according to the effect of pain relief, and it takes a certain amount of time to find the right effective dose for the patient. So in the first few days of pain treatment, pain may be controlled, but not as effective as patients and relatives expect, at this time the patient must not stop their own medication, and more communication with the doctor will help the doctor as soon as possible to adjust the dose of pain medication to the patient’s optimal dose. Myth 7: Early use of analgesic drugs in the future, no analgesic drugs available Cancer pain as a disease, should be early use of analgesic drugs, cancer pain control in the bud, can avoid the formation of intractable pain; the earlier the use of analgesic drugs, the smaller the dosage, the better the effect. Opioid analgesic drugs have no dosage limitation, and the dosage can be adjusted and increased according to the change of condition until a satisfactory pain relief effect is achieved. Timely and effective pain treatment can also help patients get rid of pain and accept anti-tumor treatment in a better state. Myth 8: The use of analgesics is the same for everyone Not true. The pain of cancer patients is very complex, and the same drug in different people may not have the same efficacy, the need to analyze the cause of each person’s pain for targeted analgesic treatment, known as “individualized” analgesic treatment. Individualized analgesic treatment should become the common goal pursued by doctors, patients and their families. Myth 9: Taking analgesics will affect the treatment of tumor. No. Because painkillers only control pain, and will not affect the disease itself, not to mention the effect of chemotherapy or radiation therapy. Pain control can make the patient more energetic for anti-tumor treatment. Myth 10: several kinds of analgesics mixed with better results The etiology of pain in cancer patients is complex, so the emphasis on drug combination analgesic therapy, the purpose is to target the different mechanisms of pain or use different types of analgesic drugs with different characteristics of the role of integrated treatment, but generally do not advocate the use of the same mechanism of action of several drugs, because the same mechanism of action of the drug mixing may lead to the efficacy of analgesic therapy does not increase, and the phenomenon of increased adverse reactions. However, the simultaneous use of several drugs with the same mechanism of action is generally not recommended, because the mixing of drugs with the same mechanism of action may lead to no increase in analgesic efficacy and an increase in adverse reactions.