Duchenne muscular dystrophy, the most common childhood muscular dystrophy, with an estimated prevalence of 1 in 5000 boys 5 to 9 years of age, is a recessive degenerative disorder caused by variants in the dystrophin gene that lead to deficiency of dystrophin.
Learn more in “A 4-Year-Old Boy with Fatigue, Imbalance, and Frequent Falls,” a Case Record of the Massachusetts General Hospital, by Alexy D. Arauz Boudreau, MD, MPH, Hee Mang Yoon, MD, PhD, and Brenda L. Wong, MB, BS: nej.md/4h7h0SP
