Congenital muscular dystrophy (CMD), which is present from birth, results in generalized weakness, and usually progresses slowly.
A subtype, called Fukuyama CMD, also involves mental retardation.
Several of the muscular dystrophies, including DMD, BMD, CMD, and most forms of LGMD, are due to defects in the genes for a complex of muscle proteins.
Some forms of LGMD and DD exhibit this pattern of inheritance, as does CMD.
Nonetheless, a child with CMD may learn to walk, either with or without some assistive device, and live into young adulthood or beyond.
