Palliative Care; Drug Treatment in Cancer Pain

Pain is an unpleasant, emotional, sensory sensation involving all the experiences of a person in the past, accompanied by possible tissue damage from any part of the body.1 Around 20-35% of the patients diagnosed with cancer, 30-50% of the mid-phase patients, and 60-100% of the late-phase patients are suffering from moderate to severe pain, depending on the type and location of the lesion. The fact that cancer is a deadly disease causes serious fear in patients. In addition, patients are very afraid of dying with pain and suffering. So the pain treatment in cancer patients is an ethical obligation. In recent studies, it has been reported that cancer pain causes restriction of daily activities up to 69% in cancer patients.2