Silver Book Fact
The economic burden of treating persistent pain that develops from acute pain in a 30-year-old over a lifetime is as much as $1 million.
Cousins M, Power I, Smith G. 1996 Labat Lecture: Pain–A persistent problem. Reg Anesth Pain Med. 2000; 25(1): 1591-8. http://journals.lww.com/rapm/Citation/2000/01000/1996_Labat_Lecture__Pain_A_Persistent_Problem.4.aspx