Period pain: Living with poorly understood endometriosis

Endometriosis occurs when ‘the lining’ of the uterus grows beyond it. Though it affects one in 10 women, the painful condition is little known here, says Helen O’Callaghan
Amy Moriarty, in Kilkenny, has had many days when she couldn’t move or stand up, because of severe abdominal pain, which radiated into her back.