<unk> es <unk>  are a group of congenital myopathies where cell nuclei are abnormally located in skeletal muscle cells. In<unk>  the nuclei are located at a position in the center of the cell, instead of their normal location at the periphery. Although all forms of<unk>  are considered rare, the most commonly known form of<unk>  is Myotubular Myopathy (MTM). Symptoms of<unk>  include severe hypotonia, hypoxia-requiring breathing assistance, and scaphocephaly. Among<unk> es, the X-linked myotubular myopathy form typically presents at birth, and is thus considered a congenital myopathy. However, some<unk> es may present later in life.
Literally, a myopathy is a disease of the muscle tissue itself. Myo derives from the word muscle and pathos means disease.  There are literally dozens of different myopathies, and myopathies are not the only conditions that can cause muscle weakness. Other diseases can cause weakness such as medical conditions affecting sites outside of the muscle itself, including problems in the brain (such as stroke, cerebral palsy, multiple sclerosis), or problems in the spinal cord and/or nerve (such as polio and spinal muscular atrophy).
Centronuclear myopathy
Nemaline myopathy
Inflammatory myopathy
Muscular dystrophy
Congenital myopathy
Inclusion body myositis
Salih myopathy
Desmin-related myofibrillar myopathy