Congenital myopathies include:
- central core disease
- congenital myopathy with fibre-type disproportion
- multi (mini) core disease
- myotubular (centronuclear) myopathy
- nemaline myopathy.
Congenital myopathies are conditions where changes in the muscle cells make them less able to contract. All these forms of congenital muscular dystrophy lead to muscle weakness and a decrease of muscle tone in early childhood. Later in life they are sometimes associated with delayed motor development and speech and learning difficulties.
About 1,000 people in the UK have a form of congenital myopathy.