That same period witnessed a 25% jump in parents' reporting a child with a developmental delay.

WSJ: ADHD Warning Signs and Kids: Growing Pains or Cause for Concern?

It includes a number of changes for childhood disorders, including new diagnoses such as social communication disorder and global developmental delay, and broadened criteria for learning disorders.

WSJ: ADHD Warning Signs and Kids: Growing Pains or Cause for Concern?

To date, 32 have received a provisional or final diagnosis of autism spectrum disorder and another 101 have been found to have other conditions that involve developmental delay.

BBC: Screen may spot autism in one-year-olds

The product information for Epilim also contains clear advice about its safety of use during pregnancy, including information about the potential for risk of developmental delay, particularly of verbal IQ and the risk of autism spectrum disorders.

BBC: Advice call after epilepsy drug Epilim study