Final answer:
Teaching about the brain-gut interaction causing symptoms is an important part of treating an adolescent with functional abdominal pain (FAP) worsened by stress and school anxiety.
Step-by-step explanation:
An important part of treatment for an adolescent diagnosed with functional abdominal pain (FAP) that worsens during stressful events and school anxiety is to teach about the brain-gut interaction causing symptoms. This helps the child understand that their symptoms are real and not just imagined. By educating the child and their parents about the mind-body connection, they can better manage their symptoms and reduce stress levels.