“… Severe pain and interference lead to school absenteeism, presenteeism and academic underperformance which have long term implications for life potential [16][17][18][19][20] Some girls with dysmenorrhoea may be at risk of developing persistent pelvic pain and sensitivity 9,11,12 Primary and secondary dysmenorrhoea incur an economic burden to women, families, workplaces and the health care system 21,22 Hormonal mood changes related to the menstrual cycle are common but the relationship between mood, severe pain and resultant disturbance is poorly understood and under-researched. It can be 'normalised' despite high impact and possibly be more deleterious for a young person whose wellbeing is already stressed by adolescence and is showing symptoms of anxiety and depression 12,20,[23][24][25][26] While approximately 70% of teenage girls report crampy pain with periods and consider their periods to be normal, 5 the challenge remains in determining criteria to identify girls with significant pain related menstrual disturbance. 6,27 The literature consistently highlights recurring factors that signpost adolescent menstrual disturbance or deviation from typical menstrual symptoms including severe period pain (equivalent to scoring 8-10 on NRS), interference with daily life activities, school absence and reporting of multiple other symptoms around menstruation.…”