There are many types of myopathies, and they can be categorized in many ways.  One category that has clinical utility is the congenital myopathies.  

Congenital myopathies are genetic disorders which result in abnormalities in skeletal muscle.

This section deals exclusively with congenital myopathies.  Please note that some topics discussed in this section may also be addressed elsewhere.

References:

Katirji, B., Kaminsky, H.J., Preston, D.C., Ruff, R.L., and Shapiro, B.E. (Eds.) (2002). Neuromuscular Disorders in Clinical Practice. Butterworth Heinemann, Boston. (ISBN:0750671696)  Pp. 1114-1127.