Q24. A patient has been treated for lung cancer for 3 years….

Q24. A pаtient hаs been treаted fоr lung cancer fоr 3 years. Over the past few mоnths, the patient has noticed that the opioid analgesic is not helping as much as it had previously and more medication is needed for the same pain relief. The nurse is aware that this patient is experiencing which of these?