Myotonic dystrophy is a genetic disorder that affects muscle function and can cause a range of symptoms. It is characterized by prolonged muscle stiffness, weakness, and difficulty relaxing muscles after contraction. The condition is caused by mutations in specific genes, leading to the accumulation of abnormal RNA in cells. There are two main types of myotonic dystrophy: Type 1 and Type 2. Type 1 is more common and typically presents in adolescence or adulthood, while Type 2 usually appears later in life. Both types can also affect other systems, including the heart, eyes, and endocrine system, leading to various complications.