To study the occurrence of tender points associated with fibromyalgia and their relationship with the stress-related pattern of tender points in children with psychosomatic recurrent abdominal pain.
In an exploratory descriptive study, 47 children aged 6-17 years with psychosomatic recurrent abdominal pain were examined for tender points associated with fibromyalgia and those associated with stress. The individual scores for these two types of tender point were correlated at inclusion and at follow-up after treatment.
At inclusion, all children had a score for stress tender points that was near the maximum. Eight satisfied the diagnostic criteria for fibromyalgia. The scores for stress and fibromyalgia tender points were correlated significantly at both inclusion (R = 0.42, p < 0.005) and follow-up (R = 0.74, p < 0.00005). At follow-up, the children who were free of pain had significantly lower scores for stress tender points (p < 0.001) and fibromyalgia tender points (p < 0.00001) than those who were not pain free.
Children with psychosomatic pain can have an increased risk of developing fibromyalgia. A longer duration of pain and more locations in which pain is felt might increase this risk. In patients with a favourable outcome, the scores for stress tender points and fibromyalgia tender points decreased significantly.