A 24-year-old woman attends a gynecology clinic concerned that she has not had a menstrual period for the past seven months. She had her first period when she was 12 years old. Her periods have been gradually becoming more infrequent. She is athletically fit, has recently been training for a marathon, and has lost some weight. She has a normal healthy appetite and diet.
She claims not to have been sexually active for the past 12 months. Her home pregnancy test is negative. What is your differential diagnosis for this patient? *This case is from the Editorial Team of Docplexus and is meant for educational purposes only. The answer is posted in the comment section below!
