📘 Section 159.3 · Dysmenorrhea

Nelson Textbook of Pediatrics 22nd Edition | Primary dysmenorrhea (prostaglandin-mediated, NSAIDs first-line), secondary dysmenorrhea (endometriosis most common, red flags: pain not responding to NSAIDs/OCPs, noncyclic pain, progressive), treatment (NSAIDs, combined oral contraceptives, LNG-IUD, laparoscopy).