Research led by King's College London and South London and Maudsley NHS Foundation Trust has analyzed factors associated with self-harm in over 111,000 adolescents aged 11-17 years old. Published in BMC Medicine the study found that the risk for self-harm presenting to hospital emergency departments was nearly three times higher for boys with autism spectrum disorder (ASD) compared to boys without ASD. Attention Deficit Hyperactivity Disorder (ADHD) was a strong predictor of self-harm for both boys and girls with approximately a four-fold increased risk for self-harm amongst those with ADHD.