Muscular dystrophy (MD) is a group of genetic disorders characterized by progressive muscle weakness and degeneration. Here’s a comprehensive overview of the critical aspects of muscular dystrophy:Muscle weakness starts in early childhood, affecting legs and pelvis first; progresses to arms, neck, and other areas.

Muscle weakness and myotonia (delayed relaxation of muscles after contraction), affecting face, neck, and distal limbs; cataracts, cardiac abnormalities, and endocrine changes.

Muscular dystrophy can affect people of all ages. Although some forms first become apparent in infancy or childhood, others may not appear until middle age or later. Duchenne muscular dystrophy is the most common kind of muscular dystrophy affecting children. Myotonic dystrophy is the most common of these diseases in adults.

• Muscular dystrophy is a group of diseases that cause progressive weakness and loss of muscle mass. In muscular dystrophy, abnormal genes (mutations) interfere with the production of proteins needed to form healthy muscle.

There are many kinds of muscular dystrophy. Symptoms of the most common variety begin in childhood, mostly in boys. Other types don’t surface until adulthood.

The main sign of muscular dystrophy is progressive muscle weakness. Specific signs and symptoms begin at different ages and in different muscle groups, depending on the type of muscular dystrophy.