Congenital myopathy marked by hypotonia and muscle weakness.

CNS diseases, atonic diplegia, congenital cerebellar ataxia, kernicterus, chromosomal defects, oculocerebrorenal syndrome, cerebral lipidoses, Prader-Willi syndrome, spinal cord diseases, spinal cord trauma, Werdnig-Hoffmann disease, peripheral nerve diseases, polyneuritis, familial dysautonomia, congenital sensory neuropathy, neuromuscular junction diseases, myasthenia gravis, infantile botulism, muscle diseases, congenital muscular dystrophy, myotonic dystrophy, glycogen storage disease of muscle and heart, central core disease, nemaline myopathy, mitochondrial myopathies.