Children with epilepsy whose seizures begin earlier in life, have neurodevelopmental challenges or need more epilepsy medications have a higher risk of having ADHD, according to a new study. Attention Deficit/Hyperactivity Disorder (ADHD) is a condition where the brain works differently to most people, according to the NHS. The research by Guang Ni and Dong Meng in the journal Epilepsy & Behavior was a meta-analysis of 12 studies looking at epilepsy and ADHD in children.