Silver Book Fact
An Internet study of patients with persistent pain found that on average, patients with persistent pain taking opioids for their pain experience more than 8 different types of pain on a monthly or more frequent basis–with 3 or more of these pains being severe.
Michaelson & Co. LLC D. Voices of Chronic Pain: A national study conducted for American Pain Foudnation. David Michaelson & Company, LLC for the American Pain Foundation; 2006. http://www.davidmichaelsoncompany.com/documents/voices%20of%20chronic%20pain%20report.pdf