What are some congenital conditions classed as myopathies?

* Nemaline myopathy is a congenital myopathy characterized by the presence of nemaline rods in muscle fibers. Nemaline rods are abnormal protein aggregates that interfere with muscle contraction. Nemaline myopathy can range in severity from mild to severe, and it can affect both children and adults.

* Myotubular myopathy is a congenital myopathy caused by mutations in the MTM1 gene. MTM1 is a protein that is essential for the formation of muscle cells. Myotubular myopathy can range in severity from mild to severe, and it can affect both children and adults.

* Congenital fiber-type disproportion is a congenital myopathy characterized by the presence of two or more different types of muscle fibers in the same muscle. This can lead to muscle weakness and fatigue. Congenital fiber-type disproportion can range in severity from mild to severe, and it can affect both children and adults.

* Central core disease is a congenital myopathy characterized by the presence of central cores in muscle fibers. Central cores are areas of muscle fibers that are not filled with contractile proteins. Central core disease can range in severity from mild to severe, and it can affect both children and adults.

* Multi-minicore disease is a congenital myopathy characterized by the presence of multiple minicores in muscle fibers. Minicores are small areas of muscle fibers that are not filled with contractile proteins. Multi-minicore disease can range in severity from mild to severe, and it can affect both children and adults.