Abstract
Menstrual dysfunction can impact both the physical and emotional health of young people1. Multiple chronic disease have been associated with menstrual dysfunction in adults2, however there is little research in adolescents, despite non adherence and sub-optimal illness control in this group. We aimed to identify the impact chronic illness has on the age of menarche (AAM) and the menstrual cycle in adolescents. Studies were extracted of female adolescents aged 10-19 who had a chronic physical illness. Data included outcomes on age of menarche and/or menstrual cycle quality. Exclusion criteria aimed to exclude diseases where menstrual dysfunction was a known part of the disease pathophysiology i.e. polycystic ovarian syndrome3, or in which medications were used that directly impacted gonadal function4. A literature search (to January 2022) was performed on EMBASE, PubMed and Cochrane library databases. Two widely used modified quality analysis tools were used. Our initial search netted 1451 articles, of which 95 full texts were examined and 43 met inclusion criteria. 27 papers focussed on Type 1 Diabetes (T1D), with 8 papers examining adolescents with cystic fibrosis (CF) and the remaining studying inflammatory bowel disease (IBD), juvenile idiopathic arthritis (JIA), coeliac disease and chronic renal disease. Metanalysis of 933 patients with T1D versus 5244 controls demonstrated a significantly later AAM in T1D (by 0.42 years; p=<0.00001). There was also a significant association between higher HbA1c and insulin dose (IU/kg) and later age of menarche. Eighteen papers reviewed other aspects of menstruation, including dysmenorrhoea, oligomenorrhoea, amenorrhoea and ovulatory function, with variable findings. The majority of studies were small and in single populations. Despite this, there was evidence of delayed menarche and some evidence of irregular menses in those with CF and T1D. Further structured studies are needed to evaluate menstrual dysfunction in adolescents and how it relates to their chronic illness.
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