[Verified Answer]: Abnormal uterine bleeding (AUB) is a…

Abnormal uterine bleeding (AUB) is a common gynecologic complaint. Review the following scenarios and 1) determine a likely cause and 2) describe the mechanism that leads to the abnormal bleeding pattern. Scenario 1: A 14-year-old female complains of amenorrhea and infrequent menses. Menarche: age 11, she denies being sexually active, and a urine pregnancy test is negative