Functional abdominal pain in childhood and adolescence is extremely stressful for patients and a therapeutic challenge for the physicians treating them. A meta-analysis of 33 randomized-controlled studies published in JAMA Pediatrics shows that cognitive-behavioral therapy or hypnotherapy promises the greatest therapy success.
“If children or adolescents complain about chronic abdominal pain and a detailed diagnostic does not reveal any somatic cause, this is referred to as functional abdominal pain,” Burkhard Rodeck, MD, general secretary of the German Society of Pediatrics and Adolescent Medicine in Berlin, told this news organization.
Signal perception disorder
“These patients are experiencing a signal perception disorder: normal body signals, such as a slight stomach rumble, are assigned to the pain category for them much more quickly than for other people,” said Dr. Rodeck. “The meta-analysis provides confirmation of this – functional abdominal pain is actually a biopsychosocial matter.”
In the standard therapy of functional abdominal pain, however, it is also possible to choose a medicinal approach. “Studies show that herbal preparations such as peppermint oil capsules have some efficacy, since they attenuate the strength of the signals being sent from the gastrointestinal tract to the brain, with the result that they are not perceived so quickly as pain. Probiotics can also potentially help,” added Dr. Rodeck.
“If this is unsuccessful, the child must be offered a psychologic/psychotherapeutic measure, usually cognitive-behavioral therapy.”
Comparison of psychosocial therapies
The meta-analysis was carried out by a research team at the University of Central Lancashire, Preston, United Kingdom. It included 2,657 children and adolescents between the ages of 7 and 17 years, of which two-thirds were girls.
Various psychosocial therapy approaches for functional abdominal pain, such as cognitive-behavioral therapy, educational assistance, hypnotherapy (directed at the digestive system), guided meditation with relaxation, yoga, or (visceral) osteopathy were investigated and compared in the studies – sometimes against each other and sometimes against no intervention.
Lead author Morris Gordon, MBChB, PhD, professor of evidence synthesis and systematic review at the University of Central Lancashire, and his colleagues reported that cognitive-behavioral therapy was 2.37-times more likely to result in therapy success than no intervention. To treat functional abdominal pain successfully in one child or adolescent, five children needed to be treated with cognitive-behavioral therapy.
Rarer, milder pain
The children and adolescents treated with cognitive-behavioral therapy also experienced less frequent and less severe abdominal pain than the children and adolescents who did not receive any intervention. The rate of side effect–related therapy discontinuations did not differ between the groups.
Hypnotherapy could also be associated with an improved outcome, compared with no intervention, added Dr. Gordon and his colleagues. Hypnotherapy was 2.86-times more likely to result in therapy success, and the number needed to treat was five.
The other therapeutic approaches investigated did not perform any better in the studies than no intervention. However, the authors noted that evidence of the effectiveness of cognitive-behavioral therapy and hypnotherapy is moderate or weak, especially owing to the high bias risk.
“The therapy for functional abdominal pain cannot be compared with the therapy for scarlet fever, for example, where penicillin is administered in the knowledge that recovery is guaranteed. There is evidence that cognitive-behavioral therapy and possibly also hypnotherapy may help, but this is not true for every patient,” said Dr. Rodeck.