Cancer pain is a pain

Cancer pain is generally chronic pain, that is, pain from the beginning of the patient's life. The nature of pain to determine according to the pain site, generally divided into three categories, somatic pain, visceral pain and neuropathic pain, depending on the specific site of the patient to decide, liver tumor or abdominal tumor caused by pain is not accurate and manifested as dull pain, according to the specific situation to administer drugs.