<prompt> Following are the features of persistent post operative pain except?Pain that develops after surgical procedurePain present for atleast 3 monthsPain where other causes are excludedPain from pre surgical problem is excluded  <response>: Ans. is b i.e., Pain present for atleast 3 months Precision does not currently exist in defining persistent post operative pain, however following features are taken into consideration :- Pain that develops after surgical procedure Pain present for atleast 2 months Pain where other causes are excluded Pain from pre surgical problem is exclu 