The Phelan-McDermid Syndrome Foundation (PMSF) is inviting people around the world to recognize Phelan-McDermid Syndrome Awareness Day on October 22 and help increase understanding of this complex genetic condition that may affect far more people than previously estimated. This year’s campaign, “You Reading This Matters,” begins with a simple idea: Awareness grows when someone takes the time to read, ask a question, learn something new, and share it with someone else.