Juvenile Fibromyalgia in Patients With Juvenile Idiopathic Arthritis: Utility of the Pain and Symptom Assessment Tool

Objective To evaluate the proportion of children with juvenile idiopathic arthritis (JIA) who met criteria for comorbid juvenile fibromyalgia (FM) using the Pain and Symptom Assessment Tool (PSAT), and to identify clinical and demographic differences among JIA patients with and without juvenile FM. Methods Patients ages 11–17 years with JIA were recruited from 4 North American pediatric rheumatology centers. Each patient completed the PSAT....