There are multiple factors that can play into this. Dr Mukesh Kripalani, consultant psychiatrist at The ADHD Centre, told HuffPost UK that a child’s impulsivity might mean they interrupt, blurt things out, struggle to wait for their turn or occasionally invade other people’s personal space.
Article source: https://www.huffingtonpost.co.uk/entry/child-adhd-struggling-friends_uk_6aba63d7e4b075cb0a3ff282