Snook ML, Henry LC, Sanfilippo JS, Zeleznik AJ, Kontos AP. Association of Concussion With Abnormal Menstrual Patterns in Adolescent and Young Women. JAMA Pediatr. 2017;171(9):879–886. doi:10.1001/jamapediatrics.2017.1140
In this cohort study of 129 adolescent and young women with a sport- or recreation-related concussion or non-head orthopedic injury who were followed up for 120 days after their injuries, the risk of having 2 or more abnormal menstrual bleeding patterns after injury was significantly higher among patients with concussion.