Aidan O’Shea has suffered up to seven concussions in career

O'Shea's admission comes as Peter Robinson yesterday warned that "concussion can be fatal" after his teenage son Ben died during a schools rugby match this month four years ago.
The 2013 All Star clashed heads with Cillian O'Connor during last August's defeat to Kerry in Limerick, a collision which he felt had a "fairly significant" influence on the outcome of the game.