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  MUSCULAR DYSTROPHY   Muscular dystrophy (MD) refers to a group of genetic disorders characterized by progressive weakness and degeneration of the muscles that control movement. 1.   Types : There are several types of muscular dystrophy, each with its own pattern of inheritance, age of onset, and rate of progression. The most common types include: ·          Duchenne Muscular Dystrophy (DMD) ·          Becker Muscular Dystrophy (BMD) ·          Myotonic Muscular Dystrophy ·          Limb-Girdle Muscular Dystrophy ·          Facioscapulohumeral Muscular Dystrophy 2.   Symptoms : Symptoms vary depending on the type but generally include muscle weakness, difficulty walking, trouble with coordination, and loss of mobility. Over time, muscles ...

  POLYMYOSITIS   Polymyositis is a chronic inflammatory muscle disease characterized by muscle weakness and inflammation. Here are the key aspects of the condition: Symptoms Muscle Weakness: Typically affects the muscles closest to the trunk (proximal muscles), such as those in the shoulders, hips, thighs, and neck. Difficulty Swallowing (Dysphagia): May occur if muscles involved in swallowing are affected. Muscle Pain and Tenderness: Although less common, some individuals may experience muscle pain. Falling and Difficulty Rising: Due to weakened muscles, individuals may frequently fall or have trouble getting up from a sitting position. Causes The exact cause of polymyositis is unknown, but it is believed to be an autoimmune disorder, where the immune system mistakenly attacks the body's own tissues. Possible triggers may include infections (bacterial, viral), certain medications, or genetic pr...