<prompt> A 20-year-old woman gives a history of sharp pain in the lower abdomen for 2-3 days every month approximately 2 weeks before the menses. The most probable etiology for her pain is:EndometriosisDysmenorrheaPelvic tuberculosisMittelschmerz syndrome  <response>: Ans. is d, i.e. Mittelschmerz syndromeRef: Dutta Gynae 4thed, p172, 5thed, p178 A female giving history of sharp pain in lower abdomen, every month, 2 weeks before the menstruation suggests mittelschmerz as the diagnosis. Mittelschmerz is synonymous to painful ovulation. Pain is associated with rupture of ovarian follicle at the time of ovulation. 