Pain is one of the main symptoms involved in cancer patients receiving treatment or because of the disease itself. Approximately, 30% to 50% of cancer patients receiving treatment experience pain and 70% to 90% with advanced stages of cancer experienced moderate to severe pain. Reducing the pain and suffering of cancer patients is essential to delivering quality care. Pain experienced by cancer patients affects quality of life, physical functioning, social relationship, and mental health, pain often co-occurs with additional symptoms, such as fatigue, sleep disturbance, loss of appetite, and anxiety.

Background: Every human being desires a life without suffering and to live his or her life in best possible quality of life, but when death is looming by a terminal disease and one is lying in bed with machines to maintain organ functions; there comes the dilemma of the choice. However, patients may place healthcare providers at prospect of ethical dilemma by declining to care or to provide treatment, despite that patients have the right to do so.