Opioids may cause some side effects, pr treatment can prevent the morbidity. The appropriate symptomatic treatment is given for the present symptoms Using reasonably the appropriate narcotic analgesics and its dose, the drug tolerance, physical dependence, addiction pseudo-addiction can be avoided• Opioids may cause some side effects, pr￾treatment can prevent the morbidity. The appropriate symptomatic treatment is given for the present symptoms. • Using reasonably the appropriate narcotic analgesics and its dose, the drug tolerance, physical dependence, addiction, pseudo-addiction can be avoided