This document is a training module for doctors and nurses on implementing pain as the 5th vital sign in a Malaysian hospital from 2008-2010. It discusses the importance of proper pain assessment and management. The objectives are to promote better communication between doctors/nurses and patients, improve patient satisfaction and care, and help manage pain more effectively. Guidelines are provided on assessing and documenting pain at regular intervals, using scales like numerical rating or Wong-Baker faces, and treating pain per the WHO analgesic ladder.