I do think the faces thing has a place in pain assessment. My son in law was in the hospital a few weeks ago with r/o SARS - he didn't have it, thank God. My husband and I went to visit, and the pain scale was posted on the wall at the foot of the bed. Hubby had been having complaining of back pain but said he didn't need to go to the dr, it wasn't that bad. After leaving SIL's room, he said to me, "You know, going by that thing on the wall, my pain is an 8 1/2. Maybe I should go to the dr."
We left there and went to our hospital ER (it was the weekend, no doc open), and he rec'd pain shots, pills, and ended up taking over three weeks to get the pain under control.
BUT if he hadn't seen that, he would have just stayed home and suffered. He doesn't show pain much other than by being quiet and he will NOT take OTC pain meds
, so he would have just stayed home and been miserable.
Just the other side of the story, I guess.