Self-injurious behaviours in people with and without intellectual delay: implications for the genetics of suicide.

Self-injurious behaviours (SIBs) occur in both people at risk of suicide and in people with intellectual delay, and it may be that the underlying pathologies are shared, at least in part. Genes identified as causative in people with intellectual delay that show SIBs may be the same genes that have an effect on suicide outcome in people without intellectual delay that self-injure.