<unk>  (also called rod myopathy or<unk>  rod myopathy) is a group of congenital, hereditary neuromuscular disorders that cause muscle weakness, generally nonprogressive, of varying severity.  "Myopathy" means "muscle disease," and a biopsy of muscle from a person with<unk>  shows abnormal thread-like rods, called<unk>  bodies, in the muscle cells. People with<unk>  (or<unk>  usually experience delayed motor development and weakness in the arm, leg, trunk, throat, and face muscles.  The disorder is often clinically categorized into several groups, including mild (typical), intermediate, severe, and adult-onset; however, these distinctions are somewhat ambiguous, as the categories frequently overlap.  Respiratory problems are a primary concern for people with all forms of<unk> , and though in some severe cases they may threaten life expectancy, aggressive and proactive care allows most individuals to survive and lead active lives.<unk>  is one of forty neuromuscular diseases covered by the Muscular Dystrophy Association.
Nemaline myopathy
Salih myopathy
Centronuclear myopathy
Muscular dystrophy
Inflammatory myopathy
Laing distal myopathy
Inclusion body myositis
Distal myopathy 2