What is cancer pain

Cancer pain includes pain directly caused by cancer and pain indirectly caused by cancer. The pain directly caused is mainly caused by tumor, mainly caused by tumor compression, followed by pain caused by tumor invasion, and the most serious is caused by tumor metastasis. For cancer pain, it is necessary to take long-term oral analgesic drug treatment, generally speaking, initially a single analgesic drug treatment, one drug control is not good, it is necessary to eat two analgesic drug treatment. For oral analgesic drug effect is not good, can take analgesic injection or analgesic patch topical pain. Pain caused by bone metastases can be considered for local radiotherapy, so pain relief and drug therapy to delay bone destruction are needed.