Disorders affecting both nerves and muscles
Impairments of the neuromusculoskeletal system
Myopathies are neuromuscular diseases causing muscle weakness and/or movement difficulties. They are classified as either inheritable myopathies or myopathies due to endocrine abnormalities. The term "inheritable myopathies" refers to disorders caused by defective genes, while the term "myopathies due to endocrine abnormalities" refers to conditions caused by faulty glands that control hormone levels.