International Myotonic Dystrophy Day, also known as International DM Day, is observed worldwide every September 15. This day aims to promote awareness of myotonic dystrophy, a genetic disorder primarily affecting the musculoskeletal system, characterized by muscles that cannot relax normally after contraction. The campaign is supported by over 50 organizations focused on myotonic dystrophy, bringing together researchers, healthcare professionals, and policymakers to facilitate research and improve access to diagnosis and treatment for patients. Individuals can participate by learning about the disorder, donating to relevant organizations, wearing green to spark conversations, and sharing information on social media using hashtags like #MyotonicDystrophy and #MyotonicDystrophyAwareness. The day highlights the importance of understanding the various symptoms and challenges faced by those living with this condition.