Background: One of the most common causes of referral to the doctor is low back pain. Psycho_ social factors play an important
role in beginning and severity and stabilizing of this chronic disease. A lot of scientist believe there is a relationship between
prevalence of chronic low back pain an personality characteristic .this study was perform to find personality characteristics of
patients with chronic low back pain, to find relationship between prevalence of chronic low back pain(clbp)an personality
characteristic .