A case report and literature review of autism and attention deficit hyperactivity disorder in paediatric chronic pain.

Psychiatric disorders are common in paediatric patients with chronic pain, but the overall prevalence of comorbid neurodevelopmental disorders is unclear. We report on a case of severe chronic pain in a child with undiagnosed comorbid autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD), where significant improvements in pain and function occurred following methylphenidate medication and parental behavioural training.