G71: Primary disorders of muscles

G71.9: Primary disorder of muscle, unspecified

The disease may be hereditary. If so, other family members may also be affected.

The severity of the symptoms may vary with this disorder. When the muscles are very weak the person is usually unable to move properly. The muscles may also be sore and keep going into spasm. It is also possible to have other symptoms. Other organs are also sometimes affected by the disorder.