BMD stands for which condition?

• A. Becker Muscular Dystrophy
• B. Basic Muscular Dystrophy
• C. Bending Muscular Dystrophy
• D. Branched Muscular Dystrophy

Answer: (A)

BMD stands for Becker Muscular Dystrophy. It’s a genetic muscular dystrophy caused by mutations in the DMD gene that reduce or partially impair the production of dystrophin, a protein essential for maintaining muscle cell membranes. Because dystrophin is only partially functional in Becker, the disease tends to have a later onset and a slower progression than the more severe Duchenne form.

Becker is inherited in an X-linked recessive pattern, so it mostly affects males and is typically passed through carrier females. The distinction from Duchenne lies in the type of mutation: Duchenne usually results from mutations that abolish dystrophin entirely, leading to earlier onset in childhood and rapid decline; Becker results from mutations that still allow some dystrophin to be made, so symptoms emerge in adolescence or early adulthood and progress more gradually.

Clinically, people with Becker often show proximal muscle weakness (hips and thighs), difficulty with stairs, a Gowers’ sign when rising from the floor, and calf pseudohypertrophy. Creatine kinase levels are often markedly elevated early on. Management is supportive and multidisciplinary, focusing on maintaining strength and mobility, respiratory support when needed, regular cardiac monitoring due to cardiomyopathy risk, and genetic counseling.

The other options aren’t recognized names for this condition.