Duchenne muscular dystrophy Duchenne muscular dystrophy (DMD) is a genetic disorder that affects the muscles of the body, leading to progressive weakness and wasting. It is one of the most common forms of muscular dystrophy, affecting approximately 1 in every 3,500 male births worldwide. Causes and Symptoms: DMD is caused by mutations in the dystrophin gene, which provides instructions for making a protein called dystrophin. Dystrophin is an important component of muscle tissue, and its absence or dysfunction leads to muscle degeneration and weakness. Symptoms of DMD typically begin to appear in early childhood, usually around the age of 3-5 years. Children with DMD often have delayed motor milestones, such as walking and running, and may have difficulty getting up from the floor or climbing stairs. As the disease progresses, muscle weakness and wasting become more pronounced, affecting the arms, legs, and torso. Other common symptoms of DMD include: Frequent falls Difficulty standing ...
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