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There is a dearth of literature studying restless leg syndrome (RLS) among pregnant patients in Pakistan. The objective of this study was to determine the prevalence and associated factors of RLS among pregnant Pakistani patients. It was conducted in 2018 among 478 women attending ante-natal check-up in the outpatient department of five hospitals in Karachi, Pakistan. Individuals were interviewed for socio-demographic information, the key criteria for RLS and its associated factors. RLS was reported in 54 (11%) individuals based on International Restless Legs Syndrome Study Group (IRLSSG) criteria. The mean age was 33.44 ± 4.42 years. Association between pregnant women with RLS and those without reveals statistically significant differences with increasing age ( p =.01), gravida ( p &lt;.01) and para ( p &lt;.001). RLS was significant among working women ( p =.001), during third trimester ( p =.001), with insomnia ( p &lt;.001), use of tobacco ( p &lt;.001) and among women with gestational diabetes ( p &lt;.001), hypertension ( p &lt;.001). The study showed a low prevalence of RLS among women during pregnancy. It further reported gestational diabetes, hypertension, insomnia and tobacco use to be independently linked to RLS.Impact StatementWhat is already known on this subject?  Pregnancy has been demonstrated to be strongly associated with development of secondary restless leg syndrome (RLS). RLS in pregnancy has also been shown to portend poor maternal and neonatal outcomes such as postpartum depression and preterm birth. Various conditions and lifestyle factors in pregnancy have been shown to be associated with the development of RLS, but there are variations in these across different populations.What do the results of this study add?  The prevalence of RLS was only reported twice in pregnant patients in Pakistan and our research helps to address this data shortage. In addition, the results of our study document a strong association of RLS with gestational hypertension and gestational diabetes and also show that smoking and exercise were correlated with RLS during pregnancy, both of which were previously unstudied in the pregnant Pakistani population.What are the implications of these findings for clinical practice and/or further research?  Demonstrating the prevalence of RLS in pregnant Pakistani patients highlights the need to screen these patients, particularly those with associated conditions identified in our findings, for RLS during antenatal visits and to treat their condition to improve maternal and neonatal outcomes. What is already known on this subject?  Pregnancy has been demonstrated to be strongly associated with development of secondary restless leg syndrome (RLS). RLS in pregnancy has also been shown to portend poor maternal and neonatal outcomes such as postpartum depression and preterm birth. Various conditions and lifestyle factors in pregnancy have been shown to be associated with the development of RLS, but there are variations in these across different populations. What do the results of this study add?  The prevalence of RLS was only reported twice in pregnant patients in Pakistan and our research helps to address this data shortage. In addition, the results of our study document a strong association of RLS with gestational hypertension and gestational diabetes and also show that smoking and exercise were correlated with RLS during pregnancy, both of which were previously unstudied in the pregnant Pakistani population. What are the implications of these findings for clinical practice and/or further research?  Demonstrating the prevalence of RLS in pregnant Pakistani patients highlights the need to screen these patients, particularly those with associated conditions identified in our findings, for RLS during antenatal visits and to treat their condition to improve maternal and neonatal outcomes.

Prevalence and associated factors of restless leg syndrome (RLS) in Pakistani women during pregnancy