Centronuclear myopathies

These rare types cause muscle weakness in the face, arms, legs and eye muscles, as well as difficulty breathing.

Congenital fiber type disproportion myopathy

This type is usually evident at birth and causes loss of muscle tone, general muscle weakness and delays in motor development.

Multiminicore disease

This type causes severe muscle weakness in the arms and legs, as well as scoliosis.

Myotubular myopathy

This rare congenital myopathy only occurs in males and causes muscle weakness, floppiness and breathing problems.

Nemaline myopathy

This congenital myopathy causes muscle weakness in the face, neck, arms and legs, as well as scoliosis and breathing and feeding problems.

What are the signs and symptoms of Pediatric Congenital Myopathy?

In many cases, the signs and symptoms of a congenital myopathy do not appear until later in infancy* (birth to 1 year) or any time later in childhood.

Symptoms include:

• Delayed motor skills
• Drooping eyelids
• Lack of muscle tone
• Muscle cramps or contractions
• Muscle weakness
• Noticeable facial weakness

*Age of infants as defined by the World Health Organization (WHO).